They wanted to know_____________. 请问这道选择题应该选哪项，为什么，谢谢

Question

A.why he didn't think it was a good idea
B. why he thinks it was not a good idea
C. why he thought it was not a good idea
D. why didn't he think it was a good idea

Answer 1

A

宾语从句是陈述语序，排除D ， 主句是一般过去时，从句要用相应的过去时，再排除B ，从句he thought it was not ...... 要用否定前移，再排除C

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Answer 2

A
b的时态不对think应用过去式，而且宾语从句要在主句否定
C 宾语从句要在主句否定
d 宾语从句的从句永远用陈述句顺序

Answer 3

我觉得是B

Answer 4

后面是跟宾语从句吧。。然后就选这个啊。。不是吗。