Thosepeople_____ageneralunderstandingofthepresentsituation.
C
lack (vt.) “缺乏，缺少 ”，直接跟宾语。作名词用时用 lack of.
My wallet is nowhere to be found.I_____it when I was on the bus.
He didn‘t seem to mind_____the music while he was studying.
Those people_____a general understanding of the present situation.
_____you understand this rule ，you‘ll have no difficulty in dealing with such problems.