where and when the accident .单项选择A has ,happened B was ,happenedC is ,happening D did happen

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/25 01:01:22
whereandwhentheaccident.单项选择Ahas,happenedBwas,happenedCis,happeningDdidhappenwhereandwhentheaccident

where and when the accident .单项选择A has ,happened B was ,happenedC is ,happening D did happen
where and when the accident .单项选择
A has ,happened B was ,happened
C is ,happening D did happen

where and when the accident .单项选择A has ,happened B was ,happenedC is ,happening D did happen
D
happen无被动语态,排除A和B,事情已经发生过了,应是过去时,所以选D

c