• 2022-06-05
    人们跑来跑去,显然发生了不寻常的事情。
    A: Peopleranbackandforth,obviously,somethingunusualhadhappened.
    B: Peoplewererunningbackandforth.Obviously,somethingunusualhadhappened.
    C: Peoplewererunningbackandforth.Obviously,somethingunusualhadbeenhappened.
    D: Peopleranbackandforth,obviously,somethingunusualhadbeenhappened.