问题描述：
Some people waste a lot of food others haven’t enough to eat.
Some people waste a lot of food ____others haven’t enough to eat.
A however B when C as D though
答案是D 为什么不选A 和B?
Some people waste a lot of food ____others haven’t enough to eat.
A however B when C as D though
答案是D 为什么不选A 和B?
问题解答：
我来补答展开全文阅读