题目内容

I haven’t finished my homework yet. I      my mother with the housework all day yesterday.
A．helpedB．have helpedC．was helpingD．have been helping
C

试题分析：考查时态。本题的关键词是all day yesterday,指在昨天一天的时间里一直在做的事情，故使用过去进行时。过去进行时既可以表示在过去的时间点，或者过去的一段时间里发生的事情，或者持续的状态。句意：我还没有完成我的家庭作业。昨天一天我都在帮助我妈妈做家务。故C正确。
点评：时态的考查要根据关键词和语境的辨析。本题关键词是all day yesterday.
练习册系列答案
相关题目
------What's the matter with Tim?
------Oh, Tim's cell phone was left in a taxi accidentally, never ________ again.
A．to find B．to be foundC．finding D．being found
In order to find the missing child, the villagers___________ all they can in the past five hours.
A．have been doingB．didC．doD．had done
The fact that so many people still smoke in public places ______ we may need a nationwide campaign to raise awareness of the risks of smoking.
A．suggest B．suggests C．suggested D．suggesting
There happened a murder case _________ the man ___________the mayor.
A．linked; withB．linking; to
C．connected; withD．joined; to
Please don’t make so much noise.I     a novel.
A．writesB．am writingC．wroteD．was writing
With the help of high technology, more and more new substances ___in the past few years.
A．discovered B．have discovered
C．had been discoveredD．have been discovered
—Tony, come down and help me with the heavy box!
— Come on! I _______ all day long．Get Peter to do that!
A．workB．had been working
C．had workedD．have been working
It is ten years since he _______ in this college.
A．worksB．workedC．has workedD．had worked

违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com

精英家教网