一道宾语从句的题

问题描述:

一道宾语从句的题
Could you tell me____?Yes,I'll show you.
A what shold I do with the computer
B how can I use the computer
C how to use the computer
D what I how to use the computer
选B
为什麽?

C 疑问词how+不定式 其它是从句但不是陈述句语序