As he was about to go out to search for Mary, she happened ____.
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A
to coming in
B
to come in
C
came in
D
to have come in
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Having arrived at the station, _____.
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A
it was found that the train had left
B
the train had left
C
the train was found left
D
he found that the train had left
The heavy snow lasted for a week, _____ a serious traffic confusion in the whole area.
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A
causing
B
caused
C
having caused
D
being caused
Thank you very much for the trouble you have taken _________ me with my English.
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A
helping
B
to help
C
help
D
helped
—I would like to buy an expensive camera.—Well.We have several models________.
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A
to choose from
B
of choice
C
to be chosen
D
for choosing