A great deal of advanced science and technology has been ______ since China carried out the reform and opening policy.
| A．brought down | B．brought in | C．brought out | D．brought up |
---Could you give me an explanation ______ your keeping silent throughout the discussion?
---Oh, terribly sorry. I had the least idea of what ________. I would have made a complete fool of myself if I had said anything.
| A．for; was discussed | B．of; had discussed |
| C．to; was being discussed | D．with; had been discussed |
---How did he ______ the punishment he was given for his cruel conduct?
---No reaction at all. He knew unkindness often reacts upon the unkind person.
| A．respond with | B．react to | C．respond for | D．react with |
Are you bored with your life? Do you feel depressed every day? Do you want to try something new and exciting? _______, ______ the Comedy Club, which is sure to brighten your life up
| A．If so; take part in | B．Even so; Join |
| C．If true; attend | D．If so; Join |
As the prisoner had been ______from the outside world for twenty years, he had no idea what the outside world was like.
| A．cut off | B．cut away | C．cut out | D．cut short |
Although I tried my best to convince them _____the importance and urgency of the operation, the doctors were not convinced _______ it immediately.
| A．with; to perform | B．of; doing | C．on; to do | D．of; to perform |