50分求答案1.There were two small roomsin the house ,____ served

50分求答案
1.There were two small roomsin the house ,____ served as a bathroom.
A.thesmallest of which B.the smallest of them
C.the smaller of which D.smallest of that
2.It is not until you havelost your health ______ you know its value.
A.until B.when C.what D.that
3.He talks as if he _______everything in the world.
A．knows B．knew
C．had known D.would have known
4.Never before _______ seesuch a terrible car accident on the road!
A.I have B.have I C.I did D.did I
5.The girl sometimes hasdif6culty _________ what the teacher says in class.
A．understand B．understanding
C．to understand D．understood
6.The paint is still wet._________.
A．Be not sure to touch it!B．Be sure not to touch it!
C．Be sure to not touch it!D．Don't be sure to touch it1
7.The students ______ theirpapers by the end of this month.
A．have finished B．will be finishing
C．will have finished D．have been finishing
8.—Did the medicine make you feel better?
—No.The more ________,________ I feel.
A.medicine I take; and the worse B.medicine I take; the worse
C.I take medicine; the worse D.I take medicine; worse
9.There was so much noise inthe classroom that the teacher couldn't make himself ______.
A.heard B.hearing C.to hear D.hear
10.This overcoat cost_________.What's more,they are _______ small for me.
A.very much; very B.too much; much too
C.much too; too much D.very much; too much
第三题，怎么不选A？

1-5 C D B C B
6-10 B C B A B
不懂再追!
第三题不选A 是因为是虚拟语气,对现在的虚拟,原句意思是 他夸夸其谈好像对天下事无所不知.
事实上怎么可能什么都知道呢,所以使用虚拟语气.
再问： 第四题 楼上楼下不一样，一个选C一个选D，求问