--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
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 — Bob has gone to California.— Oh, can you tell me when he ______? 
#102361
A
has left
B
left
C
is leaving
D
would leaving
According to a report, cigarette smoking ______ in all indoor public places in our city next year..
#101905
A
will ban
B
have banned
C
will be banned
D
have been banned
. All of the guests ___________ by 9 o’clock , but the host _____________ until 15 minutes later .
#104291
A
arrived; didn’t turn up
B
had arrived; didn’t turn up
C
arrived; hadn’t turned up
D
had arrived; hadn’t turned up