问题

The teacher commanded that the classroom should_____at once

A:clean
B:cleaned
C:be cleaned
D:be cleaning;

正确答案是：

同类题型

I have looked for my keys everywhere, but I can’t find them.—Sorry to hear that. You _____ them somewhere.

There iswithmy kitchen fan. Can you help me—OK, I will check it right now.

When you drive home, you can’t be＿＿＿＿＿＿＿careful

．I hurried to the bookstore only to find a sign on the door which．____ ,“For rent”．

_________ and I’ll get the work finished .