Susan decided not to work on the program at home because she didn’t want her par

题型：不详难度：来源：

Susan decided not to work on the program at home because she didn’t want her parents to know what she .

A．has done

B．had done

C．was doing

D．is doing

答案

解析

过去进行时可表示过去某段时间一直进行的动作。

举一反三

—You were out when I dropped in at your house.
—Oh,I for a friend from England at the airport.

A．was waiting	B．had waited
C．am waiting	D．have waited

题型：不详难度：| 查看答案

I noticed that my grandmother was very upset when I told her about the accident,so I wished I　　it to her.

A．did not mention	B．have not mentioned
C．do not mention	D．had not mentioned

题型：不详难度：| 查看答案

—Do you regret having left your first job?
—Why should I?I　　　as much,but I enjoy more of it.

A．didn’t earn	B．don’t earn
C．hadn’t earned	D．haven’t earned

题型：不详难度：| 查看答案

—I hear Robert has gone to Harvard University for his masters degree.
—Oh,how nice!Do you know when he　　　?

A．was leaving	B．left
C．had left	D．has left

题型：不详难度：| 查看答案

—According to the agreement,you must finish the work by this month.
—Don’t worry.We’re trying hard and it　　that long.

A．hasn’t lasted	B．won’t last
C．didn’t last	D．doesn’t last

题型：不详难度：| 查看答案