5道英语选择题,请告诉为什么选这项.thanks

5道英语选择题,请告诉为什么选这项.thanks
1.-does your brother alaways work so hard
----yes,___he catche a cold or has a fever sometames.
A.even though b.whenever c.no matter(为什么不选c?）
2.the teacher got angry_____what we had done in calss yesterday.
A.because B.BECAUSE OF C.as(为什么不选a)
3.----shall i telephone the hotel for information?
______there is no need.she said she should___for the night.
A.put us up B.
PUT US OFF C.put us away(为什么不选B)
4.__Do you agree with me?
____i agree with most of what you said,but i don't agree with___.
A.anything B.eveything C.something(为什么不选A）
5.----how can i find the place?
--------it's easy.go___the hill to the other side and you will find us in the woods.
A.across B.over C.above(为什么不选c）
累死我了.