—Has Sam finished his homework today?—I have no idea. He ________ it this mornin

题型：不详难度：来源：

—Has Sam finished his homework today?
—I have no idea. He ________ it this morning.

A．did

B．has done

C．was doing

D．had done

答案

解析

根据句意“我不知道Sam现在是否已经做完了作业，(但是我知道)他今天早上一直在做作业”，可知要用过去进行时。

举一反三

The discussion ________ alive when an interesting topic was brought in.

A．was coming

B．had come

C．has come

D．came

题型：不详难度：| 查看答案

You’d better not phone the manager between 7 and 8 tomorrow evening; he ________ an important meeting then.

A．will have

B．would have

C．will be having

D．will have had

题型：不详难度：| 查看答案

I left my pen on the desk and now it’s gone; who ________ it?

A．took

B．has taken

C．will take

D．had taken

题型：不详难度：| 查看答案

I feel sure I ________ her somewhere before.

A．was to meet

B．have met

C．had met

D．would meet

题型：不详难度：| 查看答案

—Will you attend the meeting this evening?
—But I ________ told anything about it.

A．wasn’t　　　

B．am not

C．haven’t been

D．won’t be

题型：不详难度：| 查看答案