--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
–This is the first time I _____ pictures with you .–Now it is time that you ______ a picture for me .
#101850
A
took , took
B
have taken , took
C
took , have taken
D
has taken , take
I into robots and used to make mobile phones as well as help with medical operations.
#102747
A
have put
B
have been put
C
had put
D
had been put
When she entered the police station, she recognized the man who ______ her at once．
#101356
A
was attacking
B
attacked
C
had attacked
D
would attack
Let's go out now. It ________ any more.
#99189
A
didn't rain
B
doesn't rain
C
won't rain
D
isn't raining
The hard life in the mountainous area he has adapted to ____ a real challenge to anyone.
#101841
A
mean
B
means
C
meant
D
meaning