______ a little earlier, I would have caught the train.
A、DidIleaveC
本题考查的是if引导的虚拟条件句，省略了if要把had提前。
Thepolicemancameuptothelonelyhousewiththedoor_______,_______thereforawhileandthenenteredit.
Bythemiddleofthe21stcentury,thevastmajorityoftheworld’spopulationwillbelivingincities_______inthecountry.
Thegovernmentcalledoutpolicementosuppresstheriot.
Thevolleyballmatchwastelevised________onCCTV.
Thegirlwasluckyenoughto_______thebadmenandranaway.
