— Is that girl in purple your sister?
— It __________ be. She’s gone to London a week before.
| A．can’t | B．won’t |
| C．mustn’t | D．needn’t |
Last week we went camping and we _______ a tent near a lake .
| A．put up | B．put on |
| C．put in | D．put down |
The young men walked _______ the forest(森林) and came to a big river at last.
| A．on | B．over | C．through | D．across |
________ a warm, sunny day, Alice got tired of having nothing to do.
| A．On | B．In | C．At | D．To |
—Who helped you with your homework?
— _______ . I did it myself.
| A．Somebody | B．Everybody | C．Nobody | D．Anybody |
—Do you like watching the NBA matches ?
—No, but I _______ Yao Ming when I was a little boy.
| A．heard of | B．heard | C．listened | D．sounded |