几道选择题没时间的话,解答一道也好,不过尽量啊.1.She was sad because of ---- any ch

几道选择题
没时间的话,解答一道也好,不过尽量啊.
1.She was sad because of ____ any chance left.
A. there being not B. there not being C. not there being D. there was not
答案是B,为什么?
2. Can you ride a horse?
No, I never had the chance ______
A. for learning it B. for learning how C. to learn it D. to learn how
答案是D,我认为是C,是不是答案错了
3.Without facts, we can't form a correct opinion, for we need to have actual
knowledge ______ our thinking.
A. which to be based on B. upon which to base C. which to base on D. to which
to be based on
答案是B,为什么
4. "I hope the dialogue," said the spokesman, "_________ between the two
presidents next week will give us some active signal.
A. making B. to make C. to be made D. made
答案是C,为什么
5. Though _____ money, his parents managed to send him to university.
A. lacked B. lacking of C. lacking D. lacked in
答案是C. 为什么B不行呢?
6.The book _____ is torn is mine.
A. the cover of which B. the cover of that C. which the cover D. whose cover
of
答案是A,为什么