杭州交通信息网弹钢琴卡通小男孩头像:英语配对
来源：百度文库 编辑：杭州交通信息网 时间：2024/05/07 03:27:32
1.Why should not we throw away cans and glass bottles?
2.Why should we use solar-powered calculators?
3.Why should we save electricity?
4.Why should not we pollute our planet?
1.it is only one we have.
2.making it usually cause air pollution.
3.batteries cause pollution.
4.they can be used again and again.
2.Why should we use solar-powered calculators?
3.Why should we save electricity?
4.Why should not we pollute our planet?
1.it is only one we have.
2.making it usually cause air pollution.
3.batteries cause pollution.
4.they can be used again and again.
上面 对 下面
2 — 3
1 -- 4
3 -- 2
4 -- 1