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單項選擇題

（）all we should put the theory into practice.

A.Beside
B.To
C.Above
D.Of

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When a fire（）at the National Exhibition, at least then priceless paintings were completely destroyed.

A.broke off
B.broke out
C.broke down
D.broke up

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Bush's farm（）is said to be at bottom of the state of Texas in north America.

A.street
B.road
C.lane
D.avenue