问题
选择题
The policemen regretted _______ as soon as possible at the alarm.
A.not taking action
B.not to take measures
C.taking no actions
D.to take no action
答案
答案:A
考查非谓语动词。短语:后悔做了某事regret doing sth,否定式应在doing前加not,句意:警察们后悔听到警报后没有尽快采取行动。take action 采取行动,所以选A。