I was almost asleep last night when I suddenly heard someone ______ at the door.
#98808
A
be knocking
B
knocking
C
to knock
D
having knocked
推荐题目
The engine just won’t start.Something seems________wrong with it.
#89482
A
to go
B
to have gone
C
going
D
having gone
The rare fish,_____ from the cooking pot, has been returned to the sea.
#94653
A
saved
B
saving
C
to be saved
D
having saved
The manager introduced the rules that she would like to see _______ the next year.
#98945
A
establish
B
establishing
C
established
D
to establish
The young man stopped and looked back as if ______ whether he was being followed.
#95381
A
seeing
B
to have seen
C
having seen
D
to see
He tried to avoid________my questions in class.
#88502
A
to answer
B
answering
C
to have answered
D
having answered