1. I ________ [can/could] swim when I was three years old.

2. Where is Kate? She __________ [should/shouldn't/] be home by now.

3. It is very dark in here. I ________ [mustn't/can't/] see you very well.

4. In my opinion, they __________ [should/shouldn't] go to Portugal, not Italy.

5. You ___________ [mustn't/must] tell her about the surpise party.

6. ________ [Must/Can] I speak to Mr. Smith, please?

7. We ___________ [don't have to/have to] wait outside the restaurant. There
aren't any empty tables.

1. You __________ [mustn't/could/should/has to] listen to your parents. They

want the best for you.

2. The weather forecast says it ________ [can/mustn't/has to/may] rain

tomorrow morning.

3. Sarah ________ [has to/should/can/could] play basketball better three years ago.

4. Danger! You ___________ [mustn't/may/can/has to] touch the lamp post.

5. Susan ________ [can/may/could/has to] play chess really well.

6. She __________ [may/has to/mustn't/should] do her homework for tomorrow.

It's compulsory!

1. Susan was really ill. She _______________________ [must have passed/couldn't

have stolen/should have visited/should visit] the doctor yesterday.

2. If you are ill, you ________________ [Could/should visit/should have

visited/couldn't have stolen] the doctor now.

3. ________ [couldn't have stolen/should have visited/Could/should visit] you swim

when you were 9 years old?

4. John ________________________ [must have passed/should visit/should have

visited/couldn't have stolen] your bike. He was with me all the time.

5. Sarah is really happy. She ____________________ [should have visited/should

visit/must have passed/couldn't have stolen] her yesterday's exam.
1. Steve ________ [can/could/] tie his shoes by himself.

2. Mary ________ [can/could] play the piano when she was young.

3. ________ [Can/Could/] I help you to set the table?

4. George ________ [can/could] come to the party tonight.

5. She ________ [could/can] sing better before her nose operation.

1. Yestarday was a very nice day. We ________ [can't/can/could] play outdoors.

2. That shelf is too high. I ________ [could/can/can't] reach it.

3. When Alice was on vacation, she ________ [can/could/can't] stay up late

everynight.

4. Barbara ________ [can't/can/could] play the harmonica and the piano at the
same time. She was very talented.

5. It is too noisy. I ________ [could/can't/can] hear a thing.

1. Tom missed the bus because he ____________ [could/can't/couldn't/Can] run fast

enough.

2. Andrew is a terrible dancer. He ________ [Can/couldn't/can't/could] dance well.

3. They ____________ [could/Can/couldn't/can't] climb the mountain. It was too

dangerous!

4. I don't know how to do this. ________ [couldn't/can't/Can/could] you help me?

5. When he was younger he ________ [Can/could/couldn't/can't] run very fast.

1. George's shoes are too small. He ____________ [mustn't walk/must

buy/mustn't wear/must try] new shoes.

2. Tigers are endangered animals People ________________ [mustn't kill/mustn't

walk/mustn't wear/must try] them fot their fur.

3. Short dresses and miniskirts are against school rules. Students ________________
[must try/mustn't wear/mustn't walk/mustn't kill] miniskirts at school.
4. The gymnasium has got a special floor. You ________________ [mustn't
wear/mustn't kill/must try/mustn't walk] on it in high heels.

5. That tracksuit is too expensive. You ____________ [mustn't wear/mustn't

walk/must buy/must try] to find something cheaper.

1. You _____________ [should/shouldn't] go swimming after a big meal.

2. You __________ [shouldn't/should] take a jacket. It's cold outside!

3. You __________ [should/shouldn't] clean the house, but I'm very tired.

4. We _____________ [shouldn't/should] eat a lot of chocolate. It isn't good for us.

5. You __________ [shouldn't/should] play basketball. It's a great sport.

6. You _____________ [should/shouldn't] push the other children.

1. ________ [Could/Can] Dam ride a bike last year?

2. That's the pizza for Sarah's party tonight. We ___________ [mustn't/can/] eat it.

3. This cake is good! ________ [Should/Can] I have another piece, please?

4. You _____________ [shouldn't/couldn't] buy fish. They don't like fish!

5. We haven't got any food at home. We ________ [shouldn't/must/] go to the

supermarket.

1. Steve _______________ [can type/can play/can't study/can't hear] at home because it's
too noisy.

2. Tom and Steve are very good tennis players. They ____________ [can type/may play/can
play/can't hear] very well.

3. She will take the racket with her. She ____________ [may be/may play/may not
pass/can play] tennis.

4. It was rainings so George _______________ [can't hear/couldn't go/can't

study/couldn't come] on a picnic today.

5. He is very busy. He ________________ [may not pass/may be/may not

have/can't hear] time to visit us.

6. She is sorry she _________________ [couldn't go/can't hear/couldn't come/can't

study] to your party. She didn't feel well.

7. I ______________ [can type/can't study/can't hear/can play] you. Please speak

more loudly.
8. Robert didn't study enough. He ________________ [may not pass/can play/may
play/may not have] the test.

9. Miss Black is such a good typist. She ____________ [can't hear/can't study/can
play/can type] very quickly.

10. The weather __________ [may be/may play/may not have/may not pass] nice
tomorrow.

1. I ___________________ [should book/shouldn't have told/musn't be

parked/would have gone] to Germany but my father got ill. (Past event)

2. I _______________________ [would have gone/should book/musn't be

parked/shouldn't have told] Alice about the party. It was a surprise. (Past event)

3. You _____________ [shouldn't have told/musn't be parked/can't see/would have

gone] Madrid in a day. It's impossible. (Impossibility)

4. You _______________ [shouldn't have told/would have gone/should book/musn't be

parked] the flight in advance. It will be be very expensive if you wait long. (Advice)

5. Cars ____________________ [musn't be parked/shouldn't have told/can't

see/would have gone] in front of the library. It's forbidden. (Prohibition)

1. He ________ sing beautifully when he was younger.

2. ________ I interrupt you, sir?

3. Students ________ (wear) a uniform. It’s compulsory (Compulsory means

obligatory)

4. I ___________ save some money if I want to go on holidays this year.

5. I _______________ saved some money last year. I couldn’t go on holidays.

6. Jairo ________ a new car. His car is broken and he can travel nowhere.

7. Rafa, ________ you swim when you were three years old?

8. The teacher _______________________ (prepare) a different exam, but he

finally did this one!