随堂演练
及时体验 巩固提升
Ⅰ.选择恰当的情态动词填空
1．have to, must
①It's late now. I ________ go home.
②He thought he ________ give up smoking because of the constant cough.
③I ________ stay at home and take care of my old grandma.
答案 ①have to/must ②had to ③must
2．must, can
①The ground is wet. It ________ have rained last night.
②That ________ not be our headmaster, for he has just gone abroad.
答案 ①must ②can
3．must, may, can
①He ________ come this afternoon, but I am not sure. He is always busy.
②You ________ not let the children play on the street; It's dangerous.
③________ you speak Russian?
答案 ①may ②must ③Can
