Question

Could you tell me______?

A.what to do it B.how to do C.what's the matter选哪个？为什么？

Answer 1

C A应改为what to do
B应改为how to do it 至于C选项现在也是可以的。

Answer 2

C,因为what to do才是对的，how to do it才是对的，所以选C，它是正常语序，是什么时候都不变的语序

Answer 3

C，A WHAT和IT重复了，B 缺少宾语IT