问题
选择题
It’s really difficult to ______ what he is trying to express.
A．leave out
B．pick out
C．work out
D．make out
答案
D
题目分析：A. leave out遗漏，B. pick out 挑选出，辨认，C. work out制定出，锻炼，D. make out辨认，理解，句意：真的很难理解他想表达什么。所以选D。