问题描述：
1.We are going to help__ (water) the trees this afternoon.
2.Many things ___ (consider) impossible in the past are common today.
3.Feeling cold in the sitting room,the old lady turn on the air-condetioner to have the temperature ___(raise).
2.Many things ___ (consider) impossible in the past are common today.
3.Feeling cold in the sitting room,the old lady turn on the air-condetioner to have the temperature ___(raise).
问题解答：
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