--I don’t know .
-- You can go and ask Jack.
A. when does the train leave
B. that we will plant trees or not
C. if she had e yesterday
D. what I should buy for him
网友回答
A. when does the train leave
B. that we will plant trees or not
C. if she had e yesterday
(答案→)D. what I should buy for him
解析：本题考查的是特殊疑问句作宾语从句，应该用陈述句语序，故选D