【单选题】
17.Neither of them ____ the snake.
【单选题】
12.You _____ return the book now. You can keep it till next week if you like.
【单选题】
6. –Look, someone is coming. Guess who it _____ be?–I think it _____ be Tom.–I don’tthink it _____ be _____.
④
might; must; can; himself
【单选题】
1. If they ______ to do this work, he might do it some other way.
【单选题】
8. I______ go to bed until I ______ finished my work last night.
【单选题】
15.Man _____ die without air or water.
【单选题】
16.Let’sclean our classroom, ______?
【单选题】
7. If it is fine tomorrow, we ______ a football match.
【单选题】
19. _______hand in his exercise book before Monday.
【单选题】
9. No sooner _______ he arrived home than he _______to start on another journey.