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單項選擇題

They walked（）the woods.

A.up
B.down
C.through
D.over

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單項選擇題

It was well known that Thomas Edison（）the electric lamp.

A.invented
B.discovered
C.found
D.developed

單項選擇題

After stopping for a few minutes, the bus moved（）to its next stop.

A.forward
B.off
C.with
D.on

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