Either the boy or his sister must have dinner here.
| A．his | B．her | C．their | D．theirs |
—Lucy doesn’t mind lending you her dictionary.
—She ________ . I’ve already borrowed one.
| A．can’t | B．mustn’t |
| C．needn’t | D．shouldn’t |
Jack tried to play a trick ______ his sister but she wasn’t taken ________ .
| A．by; on | B．in; in |
| C．on; in | D．on; on |
My English-Chinese dictionary has disappeared. Who_____ have taken it ?
| A．should | B．must | C．would | D．could |
People generally think that smoking is a bad __________ .
| A．custom | B．habit |
| C．behavior | D．action |
, they didn’t do well in helping each other with their study.
| A．To honest | B．Honest |
| C．To be honest | D．To be honestly |