6.A school in Jinan held an activity call"Recommend(推荐）Books to Your Teachers".The students made a ( )of1,000 books!
A.note B.line C.menu D.list

7.The house was on fire.Hetried to keep the fire out of his room to give the firemen time to( )him
A.touch B.reach C.arrive D.catch

8.Ads sometimes help people learn moer about new products,but at other times ads( )telllies.
A.can B.must C.need D.would

9.About a third of the company( )from the south,where ( )is comfortable for people to live.
A.is;it B.are;that C.are;it D.is;that

请知识人写清楚解体思路以及答案，最好详细些的，多谢合作！！！

6. a list of "一栏/列...的"
7. B "抵达，到达"，意指消防员可以靠近他，这样就可以拯救他了
8. A can用在肯定句的猜测中，表示可能性比较小。
9. B 分数，百分数等通常根据修饰的名词可不可数来判断谓语动词的单复数，而后面“it”则是形式主语，代替“to live”