It was back home after experiment.
| A．not until midnight did he go | B．until midnight that he didn’t go |
| C．not until midnight that he went | D．until midnight when he didn’t |
Who would you rather ______ with the teacher about the problem?
| A．talking | B．talk | C．have talked | D．have talk |
When _____ the letter, tears came to her eyes.
| A．she was reading | B．reading | C．she reading | D．read |
Did he find _____ hard to learn a foreign language?
| A．that | B．him | C．it | D．himself |
The computer system _____suddenly while Paul was searching for information on the Internet.
| A．broke in | B．broke out | C．broke up | D．broke down |
___ Mr. Smith is waiting to see you. He appears to be quite____ important person.
| A．/; an | B．A; an | C．The; the | D．The; / |