Question

The Math problem is too difficult , we really don’t know ________ to do it .

A．which

B．where

C．what

D．how

Answer 1

D

试题分析：句意：这道数学题太难了，我们真的不知道怎么做。A. which哪一个； B. where 哪里；C. what 什么；D. how怎样，根据句意，故选择D。