—Is it for two months ______ they have stayed here?
—No,it is only three weeks ______they arrived here．
| A．that;since | B．that;when | C．when;that | D．since;before |
The dam is 3800 ___. It is a 980 ___ dam at the base.
| A．metres long, metres wide | B．metres-long, metres wide | C．metres long, metre-wide |
| D．metre—long, metres wide |
I don't think it's a good idea, ___ ?
| A．is it | B．isn’t it | C．do I | D．don't I |
China has thousands of islands, the largest ___ is Taiwan.
| A．in which | B．which | C．in that | D．of which |
In China, the needle treatment dates __ ancient times.
| A．from | B．back to | C．back from | D．both A and B |
He’d like __ by air to Egypt, ___ he?
| A．to go, hadn't | B．going, wouldn't | C．to go. Wouldn't | D．going, shouldn't |