单项选择题

Mr. Smith() working till he was seventy years old.

A. kept up
B. kept on
C. kept to
D. kept out

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Playing table tennis is her ()

A. hobby
B. care
C. sport
D. habit
单项选择题
We agreed to his suggestion that a bridge () across the river.

A. be built
B. was built
C. should build
D. would be built
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