Don't ______ the windows open---it's inviting thieves to enter.
| A．keep | B．leave | C．remain | D．stay |
He wasof having asked such a silly question.
| A．sorry | B．shame | C．ashamed | D．regret |
I am sorry to keep you waiting. I’ll make shorter work of this.
—. I’m not in a hurry.
| A．Take it easy | B．Take your time | C．That’s all right | D．Do as you please |
here a few minutes earlier, he would have met that famous film star.
| A．Should be | B．Had he been | C．Were he | D．Has he been |
You can think of many casesChinese students obviously know a lot of English words and expressions but can’t express themselves freely.
| A．when. | B．which. | C．as. | D．where |
when Newton was sitting under an apple tree.
| A．Fell down an apple | B．Down an apple fell |
| C．An apple falls down | D．Down fell an apple |