After several sleepless nights, Mr. Smith ______ a perfect solution to the problems.
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A
kept up with
B
put up with
C
came up with
D
ended up with
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There are ______ students in our school.
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A
five hundreds
B
five hundred
C
hundred of
D
five hundreds of
Mr. Black used to be busy. But now he’s tired and , so he has plenty of time to exercise.
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A
hard
B
calm
C
free
D
nervous