I _______ use a clock to wake me up because at six o’clock every morning the train comes by my house.
| A．couldn’t | B．mustn’t |
| C．shouldn’t | D．needn’t |
The English teacher suggested Lily that she _________ more English books.
| A．reads | B．must read | C．read | D．can read |
I _________ here earlier, but I couldn’t catch the first bus.
| A．should come | B．have come | C．should be | D．should have come |
--- Where did you find Lily?
--- It is in the bookstore _________ she is working _________ I found her.
| A．in which; where | B．which; that | C．where; that | D．that; where |
When _________ where he had put the book, he kept silent.
| A．ask | B．asking | C．to ask | D．asked |
--- How often do you work out?
--- _________, but usually once a week.
| A．Have no idea. | B．It depends. | C．As usual. | D．Generally speaking. |