I don't think he could have done such a stupid thing last night,_______ ?
| A．did he |
| B．could he |
| C．do I |
| D．hasn't he |
I work in a business ______ almost everyone is waiting for a great chance．
| A．how | B．which | C．where | D．that |
Mark was a student at this university from 1999 to 2003, __________ he studied very hard and was made
Chairman of the Students’ Union．
| A．during which time | B．for which time |
| C．during whose time | D．by that time |
Last month, part of Southeast Asia was struck by floods, from _____ effects the people are still suffering．
| A．that | B．whose | C．those | D．what |
________ many times, he finally understood it．
| A．Told | B．Telling | C．Having told | D．Having been told |
He told us whether _________ a picnic was still under discussion
| A．to have | B．having | C．have | D．had |