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

試題分析：句意：這道數(shù)學(xué)題太難了，我們真的不知道怎么做。A. which哪一個(gè)； B. where 哪里；C. what 什么；D. how怎樣，根據(jù)句意，故選擇D。