wind power is an ancient source of energine _____we may return in the near future 关系词怎么填写
人气:264 ℃ 时间:2020-04-16 08:10:57
解答
此题考察定语从句,先行词是energy,从句we may return in the near future,这里动词有一个搭配 即return to A B两个选项中的介词不能和return搭配.which 指代energy. =Wind power is an ancient source of energy which we may return to in the near future. 所以答案是: to which