急求下面这道题的英语答案,谢谢

急求下面这道题的英语答案,谢谢
23. Can you tell me __________?
A. whose garden belongs to
B. whom does the garden belong to
C. whom the garden belong to
D. to whom does the garden belong
What the teacher said _______ it.

A. had no effect on B. had no
effect in

C. have no effect on D. has no
effects on

正确答案为：
23 E whom the garden belongs to
24 A
再问： 为什么不是C whom the garden belong? 宾语从句不是陈述句语序吗？
C选项不对吗？为什么要用had呢？
再答： 1 对。C确实是陈诉距语序，但是谓语belong不正确，因为主语the garden是单数，谓语也要单数，要加s, 所以正确答案应该是 whom the garden belongs to

2. 也是主谓单复数的错误，主语是：What the teacher said 是单数，所谓谓语也要单数，have是复数，不正确，要用has, D选项符合，但是 因为短语 effect不可数 ,所以不选D，只能选A，had no effect on，过去式。