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單項選擇題

After living here for so long.I（）the noise.

A.used to
B.didn't use to
C.am used to
D.use to

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單項選擇題

Under no（）should we surrender to our enemies.

A.circumstances
B.environment
C.situation
D.condition

單項選擇題

When facing difficulties and obstacles,we should never act in a（）way.

A.constructive
B.positive
C.negative
D.active

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