I"m sorry you ______ so long, but it" ll still be some time before Jim gets back

题型：不详难度：来源：

I"m sorry you ______ so long, but it" ll still be some time before Jim gets back．

A．wait

B．waited

C．had waited

D．have been waiting

答案

解析

试题分析：wait从说话之前（过去）就开始了一直持续到现在，再根据下文t" ll still be some time before Jim gets back可知动作还会继续下去。句意：很抱歉让你等了这么久，但是在Jim还要过一段时间才回来（你还得等）
点评：要善于确定句子时态，可以通过时间状语确定,还可以根据上下文来确定.但不能断章取义，要认真看清题意，像本题，还要注意从but it" ll still be some time 上看，说明动作还在继续。

举一反三

When she entered the police station, she recognized the man who ______ her at once．

A．was attacking

B．attacked

C．had attacked

D．would attack

题型：不详难度：| 查看答案

David _____ a customer when the fire started．

A．served

B．was serving

C．had served

D．would serve

题型：不详难度：| 查看答案

Your chance _______if you don’t take action at once.

A．are lost

B．will lost

C．lose

D．will be lost

题型：不详难度：| 查看答案

It is said that a new robot _______by him in a few days.

A．will be designed	B．has been designed
C．designed	D．will have been designed

题型：不详难度：| 查看答案

Do you know the thief_______by the police.

A．has been catching

B．has caught

C．has been caught

D．will caught

题型：不详难度：| 查看答案