Thosepeople_____ageneralunderstandingofthepresentsituation.
C
lack (vt.) “缺乏，缺少 ”，直接跟宾语。作名词用时用 lack of.
Both of my brothers are now married ，so I have two_____.
Your bike needs_____.You ‘d better do i right now.
_____alltherepresentativesstillnotthere，themeetingwaspostponedforseveralhours.
Childrenwhoareover-protectedbytheirparentsmaybecome_____.