The teacher tells his students to read the novel over and over again until the

题型：不详难度：来源：

The teacher tells his students to read the novel over and over again until they ______ it.

A．understand	B．understood
C．have understood	D．have been understood

答案

解析

在时间状语从句中一般用现在时态表示将来。

举一反三

----- Do you know our town at all?　　　
　----- No, this is the first time I ______ here.

A．was

B．have been

C．came

D．are coming

题型：不详难度：| 查看答案

I first met Lisa three years ago. She _____ at a shop at the time.

A．has worked	B．was working
C．had been worked	D．had worked

题型：不详难度：| 查看答案

According to the time table , the train for Beijing______ at seven o’clock in the evening .

A．leaves

B．has left

C．was left

D．will leave

题型：不详难度：| 查看答案

By the end of this year, we _____ 2000 English words.

A．will learn	B．would learn
C．have learned	D．will have learned

题型：不详难度：| 查看答案

He is too careless and he _______ keys.

A．always lost	B．always loses
C．is always losing	D．will always lose

题型：不详难度：| 查看答案