--Excuse me, I don't think you can smoke here. ---Really sorry. I ______ this is a non-smoking room.
#101474
A
didn't know
B
don't know
C
have no idea
D
haven't known
推荐题目
He collected information on 1,000 people, whose IQ       when they were ten years old.
#102201
A
is tested
B
has tested
C
would test
D
had been tested
 His film is sure to win the award because it ____ by most people.
#100220
A
thinks well of
B
is thought well
C
is well thought
D
is well thought of[
The pen my father sent me as my birthday gift           very well.
#104251
A
is written
B
writes
C
writing
D
has written