初三英语考试题中的几道,最好能简单讲一下为什么是这个答案

题目

初三英语考试题中的几道,最好能简单讲一下为什么是这个答案
1.The chair looks very old,but in fact it is very comfortable to ______.
A.sit B.sit on C.be sat D.be sat on
2.I'm afraid there is ___ for all of you in the hall.
A.not many B.no rooms C.no enough room D.not enough room
3.句型转换
He came to the meeting though he was ill.(同义句)
He came to the meeting ______ _______ ________ his illness.
4.用所给词的适当形式填空
All my friends enjoy _________(lie) on the beach.
Edsion made a lot of _________(invent) in his life.
How can we stop such problems__________ (happen) again?
Tomorrow is Betty's ___________(fifteen) birthday.

答案

1.The chair looks very old, but in fact it is very comfortable to _B____.A.sit B.sit on C. be sat D.be sat on坐在椅子上,用sit on2.I'm afraid there is _C__ for all of you in the hall.A. not many B....