1. With special equipment, some scientists are studying the ways in which the mountain snow can ________________(make)use of.
【答案】 be made, 本题考查use构成的短语make use of的意思。make use of 的意思是“利用”，在本句中使用了被动语态。
2. To most of us,friendships _____________ (consider) very important, but we need to have clear in our minds the kinds of friends we want.
【答案】 are considered, 分析句子结构得知，使用被动语态。
