– I have got a headache. --No wonder. You ___in front of that computer too long

题型：不详难度：来源：

– I have got a headache.
--No wonder. You ___in front of that computer too long.

A．work

B．are working

C．have been working

D．worked

答案

解析

考查时态。work和are working是一般现在时和现在进行时，只说明了现在的情况，而未包含过去的，故排除A和B；而worked只说明了过去，未包含现在，故排除D，只有C用了现在完成进行时，既包含了现在，又包含了过去，说明了动作对现在的影响是你头痛了，A是正确的。

举一反三

Leaders of the BRIC countries-----Brazil, Russia, India and China----_______their second summit on Friday. President Hu Jintao then returned home to help direct relief work ______the deadly earthquake in Qinhai.

A．left, to follow	B．concluded, following
C．had left, following	D．had concluded, followed

题型：不详难度：| 查看答案

Every possible means _______to prevent the air pollution, but the sky is still not clear.

A．are being used

B．have been used

C．has been used

D．had been used

题型：不详难度：| 查看答案

I ______ on a sofa because my grandparents have come for the weekend.

A．slept

B．was sleeping

C．have slept

D．am sleeping

题型：不详难度：| 查看答案

The child said that he had _____ the pen on the desk, but I thought he ____ to me.

A．laid; lied

B．lain; lied

C．lied; lay

D．lain; lay

题型：不详难度：| 查看答案

After he had broken the world record, Rod ____ to a restaurant to celebrate with hid friends.

A．went

B．had gone

C．would go

D．has gone

题型：不详难度：| 查看答案