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單項選擇題

We have kept（）our friendship by writing to each other, so we are true friends.

A.back
B.up
C.off
D.down

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單項選擇題

It（）that I met one of my old classmates on my way home yesterday.

A.took place
B.occurred
C.broke out
D.happened

單項選擇題

We advised him to give up smoking,（）a lot of exercise.

A.to do
B.and to do
C.and do
D.and doing

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