—Why was he late for school yesterday?— He overslept. By the time he got to the bus stop, the bus ________ already ______.
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A
has; left
B
had; left
C
was; leaving
D
have; left
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-Have you visited New York?-Yes, I have. I __________ there twice.
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A
have gone
B
will go
C
have been
D
went
I became a teacher ten years ______. I have been a teacher _______ 2008.
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A
ago; for
B
before; since
C
ago; since
D
ago; in
My aunt left her office after she __________ her work.
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A
had finished
B
finishes
C
has finished
D
was finished