Hardly _______ to sleep when _______ the door.
A.had I gone;someone knocked at |
B.I had gone;did someone knock at |
C.had I gone;did someone knock at |
D.did I go;someone knocked at |
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Hardly _______ to sleep when _______ the door.
A.had I gone;someone knocked at |
B.I had gone;did someone knock at |
C.had I gone;did someone knock at |
D.did I go;someone knocked at |