By the time he arrived at the airport, the plane .A．has taken offB．wa

题型：不详难度：来源：

By the time he arrived at the airport, the plane .

A．has taken off

B．was taking off

C．would take off

D．had taken off

答案

解析

考察时态。句意：当他们到达机场时，飞机已经起飞了。可知叙述的是过去某个时间已发生的动作，故用过去完成时态。选D。

举一反三

---Where is your father?
---He isn’t here. He __________ Yushu to help the people in trouble.

A．has gone to

B．has been to

C．went

D．is going

题型：不详难度：| 查看答案

They in Beijing next Sunday.
A. arrive B. arrived C arriving D. are arriving

题型：不详难度：| 查看答案

A student _________ from a tree and __________ his right leg.

A．fell; hurted

B．fell; hurt

C．falled; hurt

D．falled; hurted

题型：不详难度：| 查看答案

It ___________ heavily when I left school yesterday.

A．was snowing

B．is snowing

C．snowed

D．is snowy

题型：不详难度：| 查看答案

I _________ my pen when I _____________ in the park.

A．lost; was walking	B．lost; walked
C．was losting; was walking	D．was losting; walked

题型：不详难度：| 查看答案