When he was opening the door, he was ___________ that he was being followed by a policeman.
#19369
A
conscious
B
casual
C
careful
D
doubtful
推荐题目
 Please remain ______; the winner of the prize will be announced soon.
#20401
A
seating
B
seated
C
to seat
D
to be seated
—Could we stay here for the night?—Sorry. I have ____ to hold you all.
#20341
A
too small a room
B
very small a room
C
a too small room
D
such small a room
 How cold it is! We’ve never had ______ this winter.
#19581
A
the colder day
B
a cold day
C
the coldest day
D
a colder day