who can tell us___about over there?

问题描述:

who can tell us___about over there?
A.what theytalk B.what are talking
C.what do they talk D.what they are talking

排除法,A 动词原型前面没有系动词,所以不选.C 从句意可得应用现在进行时,所以不选.D 宾语从句中加they是不对的,所以不选.