题目内容
完成句子
A steam engine ________ （转变）heat power.
A：They are a group of writers of promise in this area and they will go to Beijing for the further study．
B：They are a group of ________ writers in this area and they will go to Beijing for the further study．
A ski had to ________________（被用做）a tent pole.
________ a ________ ________ (在某种程度上) drinking alcohol does harm to our health.
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