11. I didn’t finish reading that French book, neither _____ .
A. did he B. didn’t he C. he did D. he could
12. _____ said was disputed by several other witnesses.
A. That the man B. It is the man
C. What the man D. The man had
解析：What the man said…… 这是一个名词性主语从句做主语.
13 She heard a terrible noise, _____ brought her heart into her mouth.
A. it B. this C. which D. that
14. _____ is careless when disposing of his wastes.
A. It is man B. Man C. Man who D. A man
解析： Man 在这里是指“人类”的意思。
15. _____ five hundred people are believed to have drowned.
A. As many as B. As much as
C. So many as D. So much as
解析：首先B、D不对，因为much后面修饰不可数名词； as many as 与…一样多，后面可以接具体的数字；而C项不正确，因为：so many as 如此众多的，后面不能出现具体的数字。