题型:问答题 简答题 It is wasteful ______ paper and metal.[ ]A. to throw away B. throwing awayC. throw away D. thrown away 查看答案
题型:问答题 简答题 You did not perform as well as the other competitors-____,you failed.[ ]A. in other words B. after all C. in the end D. at the same time 查看答案