用适当的情态动词填空。 |
1. There being no bus that night,we ______ go home on foot. 2. You _____ worry about him,he is not a child. 3. You _____ opened the letter, it was written for me. 4. — Must I finish my homework today? — No,you____. 5. You _____ play football on the road because it is dangerous. 6. The windows _____ cleaning. |