I was just (falling) (sleep) last night (when) I heard a knock (at) the door.
A: falling
B: sleep
C: when
D: at
A: falling
B: sleep
C: when
D: at
举一反三
- I was just falling sleep last night when I heard a knock at the door.
- I (was just) falling (sleep) last night (when) I heard a knock (at) the door. A: was just B: sleep C: when D: at
- I was almost asleep last night when I suddenly heard someone ( ) at the door.
- I was almost asleep last night when I suddenly heard someone _____ at thedoor.(2013年真题） A: be knocking B: knocking C: to knock D: having knocked
- I was almost asleep last night.........................(as, when) I suddenly heard someone knocking on the door.