Выбрать правильные модальные глаголы
1. You (can \ should) be more polite.
2. (may \ must) I come in?
3. Jim was very tired that he (must \ couldn't) work.
4. The children (can \ could) swim in the lake last summer.
5. You (must \ can) come to school in time.
6. (May \ should) I ask a question?
7. You (should \ need) stay at home if you are ill.
8. You (may \ have to) ask a permission to leave the classroom.
9. I (need to \ must) to buy some tea because I'm out of it.
1.should; 2.may; 3.couldn't; 4.could; 5.must; 6.may; 7.should; 8;have to; 9.need to.
Объяснение: