是were doing 还是were did

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是weredoing还是weredid是weredoing还是weredid是weredoing还是weredidweredoing或weredone没有weredid的形式weredoingwere

是were doing 还是were did
是were doing 还是were did

是were doing 还是were did
were doing 或were done 没有were did 的形式

were doing

were. did

如果陈述的是过去正在进行的动作,是were doing