--I’m going to the States?
--How long ________ you________ in the States?
| A．are; stayed | B．are; staying | C．have; stayed | D．did; stay |
There is still much room for improvement in our work, I see it.
| A．because | B．since | C．which | D．as |
—Have some more beer?
—.
| A．I don’t mind if I do | B．That’s all right |
| C．No problem. Thank you | D．Thanks ,but I can help myself |
I would like to have room , window of which opens to south.
| A．a; the ;a | B．a ;the ; the | C．a ; 不填；不填 | D．a; the；不填 |
—Mr. White didn’t come last night ,did he?
—No ,we for him. A whole night was wasted.
| A．had waited | B．have been waiting |
| C．were waiting | D．had been waiting |
You said the books were on the shelf ,but there.
| A．there was no oneycy | B．there were none |
| C．there were no ones | D．was none |