— She looks very happy. She _______ have passed the exam.
— I guess so. It’s not difficult after all.
| A．should | B．could | C．must | D．might |
主谓一致
. On entering the room, we saw one and a half apples ________ left on the table.
| A．is | B．are | C．has | D．have |
. The bullet hit him in the left shoulder— ________ he should have been killed.
| A．being a little lower, | B．if a little lower, and |
| C．unless a little lower, or | D．a little lower, and |
. ________, and the problem would be solved.
| A．A bit more effort | B．Having a little effort |
| C．If you have a bit more effort | D．There being a little effort |
. Do you think ________ nothing to be done?
| A．it remained | B．there remained | C．it remaining | D．that remains |
. He thought that _____.
| A．the effort doing the job was not worth |
| B．the effort was not worth in doing the job |
| C．it was not worth the effort doing the job |
| D．it was not worth the effort by doing the job |