問題詳情
16. Recycling ______ the process of collecting used materialsand manufacturing them into new products.
(A) which is
(B) which has
(C) which is done by
(D) is
參考答案
答案：D
難度：簡單0.656
書單：沒有書單，新增
用户評論
【Andy Lin】評論
Recycling(主詞) ______(動詞) the process of collecting(名詞) used materials and manufacturing them into new products.(修飾名詞)缺乏一個動詞才是完整句子，所以選(D) is