There isn't any difference between the two .I really don't know_______A how to choose B which to chooseC to choose whatD to choose which重点是 为什么A 不对

There isn't any difference between the two .I really don't know_______
A how to choose
B which to choose
C to choose what
D to choose which
重点是 为什么A 不对

选B
两者之间没有任何不同,我真的不知道要选哪个.
A how是作状语用的,choose在这里做及物动词 要加宾语 但是how只是状语 不能充当宾语 如果要一定要用上how 就把它改成how to choose it 怎么选择
类似的还有 what to do 也相当于how to do it
以上讲的比较肤浅,详细的问老师吧、

B