选had
一般过去时
当我得病了,我不得不去医院.
后面的过程与前面的过程同时发生
When I was sick I _____ to go to the hospital.was having have had not had hadn't
When I was sick I _____ to go to the hospital.was having have had not had hadn't
英语人气:284 ℃时间:2019-10-24 03:22:37
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