. ------Don’t put the waste on the ground.                ------Oh, I’m very sorry. I ____ the dustbin there. 
#103748
A
don’t see
B
isn’t seeing
C
didn’t see
D
haven’t seen
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 —Did you hear about the air crash? I feel so lucky! —Yes.If you _____ that flight, I _____ speaking to you now.
#102251
A
were taking; wouldn't be
B
took; wouldn't have been
C
had taken; wouldn't be
D
had taken; wouldn't have been
In such dry weather, the flowers will have to be watered if they ____________
#104811
A
have survived
B
are to survive
C
would survive
D
will survive