问题

The professor recommends that we ____ the experiment until it is carefully designed.[ ]

A:don't start
B: not start
C: will not start
D: would not start

正确答案是：

同类题型

－Why not follow the recorder and practice your spoken English?－______

I’m fed up with this rain. How I wish togo hiking this weekend!— Forget it. I’m afraid the wet days will_____.

There _______a knife and a forkon the table.

On the way home I met my friend John, from _______ home the thief had stolen a computer.

下列句子中，没有语病的一项是（）