There are lots of plastic bags ____ in the river, ____ it very dirty.
| A．floating; making | B．to float; made |
| C．being floated; made | D．floated; making |
_______ the manager came to Beijing on business, he would visit his old friends there.
| A．Every time | B．Many times | C．In no time | D．All the time |
We’ll only discuss such problems _______ something to do with our own interests.
| A．that have | B．as have | C．as has | D．which has |
In the police station, I saw the man from ______room the thief had stolen the TV set.
| A．whose | B．whom | C．which | D．that |
Jack London, ___________ life had once been very hard, was successful later.
| A．for which | B．for whose | C．for whom | D．for that |
Martin Van Buren was the eighth president of the United States and the first ______native language was not English but Dutch.
| A．whose | B．that | C．where | D．which |