When I was doing shopping last Sunday, I ______ Mr. Smith in the street.
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A
came across
B
came about
C
came along
D
came up with
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I don’t allow you ________ so high a mountain. 
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A
to risk going
B
risking to go
C
going to risk
D
risk going
We have ________ bread.
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A
run out
B
used out
C
run out of
D
given out