Question

【题目】His writing is so confusing that it’s difficult to make out _____it is he is trying to express.
A. that

B. how

C. who

D. What

Answer 1

【答案】D

【解析】选 D。考查名词性从句。句意为：他的笔迹非常混乱，很难弄清他想表达什么意思。本题考查动词短语make out引起的的宾语从句，该空在宾语从句中作express的宾语，表示事物，故选择D项。that在宾语从句中不作句子成分；how作方式状语；who作主语，指人。只有what可用作宾语并且指事物。