[-C32]Tom is good at his work,but he seems to _____ confidence.

问题描述:

[-C32]Tom is good at his work,but he seems to _____ confidence.
A.lack
B.lack of
C.lacking in
D.short of
为什么选A不选C?

lack要么是一个及物动词,表示“缺乏”,后面直接接名词;
要么就当名词使用,常见句型 be lack of 缺乏
seem to do sth固定句型,后面直接接动词原形
所以不管从哪方面讲C一定是错的
如果选B或者D前面要有一个be