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
It is rather ______ that we still do not know how many species there are in the world today.
#59576
A
misleading
B
embarrassing
C
boring
D
demanding
This kind of paper was as soft and light as silk but ______ expensive.
#19923
A
much less
B
much little
C
many less
D
much more than
He is ________ scolding his child,which is not a good way to educate him.
#20547
A
often
B
usually
C
frequently
D
always
There is a wide ________of reference books to be found, so ________you look for some material needed, you can turn to me.
#19392
A
kind; the last time
B
sort; every time
C
variety; next time
D
type; the moment