The teachers ________ on the blackboard with chalk in the future.
#39033
A
isn't writing
B
didn't write
C
don't write
D
won't write
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Don’t make a noise! They _______on a physics problem now.
#41516
A
will work
B
are working
C
worked
D
have worked
—Where         the dictionary? I can’t see it.—I         it right here a moment ago. But it’s gone.
#41985
A
did you put, have put
B
have you put, put
C
had you put, have put
D
were you putting, had put
My mother was cooking while I_________ the radio.
#40677
A
listened to
B
have listened to
C
was listening to
D
am listening to