“Was it under the tree _____ you were away talking to a friend？” “Sure. But when I got back there, the bike was gone.
| A．that | B．where |
| C．which | D．while |
There is a new problem ____in the popularity of private cars ____ road conditions need to be improved .
| A．involving ; that | B．involved ; that |
| C．involved; where | D．involving ; which |
It doesn’t matter to me _____I miss my train, because there’s another one later.
| A．that | B．if | C．unless | D．when |
___we admit that there are still some problems about NMET, we don't mean that it is of no use.
| A．Until | B．While | C．As | D．Unless |
—I thought you wouldn’t mind.
—Well, as a matter of fact I _____; but you should have asked me first.
| A．did | B．do | C．won’t | D．don’t |
The newcomer is from Tibet, ________ I can tell from his appearance.
| A．which | B．what | C．where | D．who |