I want to know______do to help my neighbour,

题目

I want to know______do to help my neighbour,
I want to know______do to help my neighbour.
A:what I can
B:how I can
C:what can I
D:how can I
要有理由奥

答案

A （作DO的宾语,另外I WANT TO KNOW 后接宾语从句,是陈述句语序,排除C与D,而B中的HOW 不能作宾语）