—Are you coming to Jeff's party?
—I'm not sure.I ________ go to the concert instead.
| A．must | B．would | C．should | D．might |
____ the days he had spent with his American friends, he couldn’t help_____.
| A．Keeping up; smile | B．Staying up; smiling |
| C．Looking back on; smiling | D．Looking at; to smile |
To have a dinner at a restaurant on the Eve of the Spring Festival, you need to reserve the restaurant months before, _____?
| A．mustn’t you | B．didn’t you | C．don’t you | D．needn’t you |
The reason _______ he explained for his being late was ________ his alarm clock didn’t work.
| A．why; because | B．that; because | C．/; that | D．for which; that |
The ______ look on her face suggested that she _________ such a result.
| A．puzzling; hadn’t expected |
| B．puzzled; hadn’t expected |
| C．puzzling; wouldn’t expect |
| D．puzzled; shouldn’t expect |
The boy is running impatiently here and there as if____ something lost on the sports ground.
| A．to search | B．searching | C．searching for | D．to search for |