名词性从句是英语的一个语法重点，大家是否掌握这个语法呢？以下是小编精心准备的名词性从句练习题，大家可以参考以下内容哦！
1.His success was because of ________ he had been working hard.
A. that B. the fact which C.the fact that D.the fact
2."Is Mary from New York City " "I don't know _______."
A. from what city does she come from
B. from what city she come
C. what city does she come from
D. what city she comes from
3.________ makes mistakes must correct them.
A. What B. That C. Whoever D. Whatever
4. The reason why I didn't go to Shanghai was ________ a new job.
A. because I got B. because of getting
C. I got D. that I got
5. It worried her a bit ____ her hair was turning grey.
A. while B. that C. if D. for
6. Henry killed the dog. I'll ask him why ________.
A. did he do that B. he did that
C. he did D. he has done so
7. Have you seen Henry lately My boss wants to know ________.
A. how he is getting along
B. how is he getting along
C. what he is getting along
D. what is he getting along
8. It is generally considered unwise to give a child ____ he or she wants.
A. however B. whatever C. whichever D. whenever
9. He asked me ________ with me.
A. what is the trouble B. what wrong was
C. what was the matter D. what trouble it is
10. I am sure ________ he said is true.
A. that B. about that C. of that D. that what
11. When and why he came here ________ yet.
A. is not known B. are not known
C. has not known D. have not bee
12.I wonder how much ________.
A. does the watch cost B. did the watch cost