問題詳情
4. A: Why green buildings are so important?
B:________
(A) They are famous for their green design.
(B) Because they save the Earth’s natural resources.
(C) Because of the eco-friendly blackboards.
(D) All the cars will run on biogas by 2020.
參考答案
答案：B
難度：計算中-1
書單：沒有書單，新增
用户評論