1.伦敦奥运会将于2012年举行.
The Olympic Games （will be held ）in London in 2012.
2.这种照相机不再生产了.
This kind of camera is （ not produced any longer ）.
3.来访者登记后方可进入学校.
Visitors（aren't allowed to go ）into the school before the form is filled in.
4.这俩公共汽车必须马上修理.
This bus （must be repaired ）at once.
5.学生的作业必须按时上交.
Students‘ homework （ must be handed in ）on time .
6.城市的作业不应该被砍伐.
The city’s tress （shouldn't be cut down ）.
7.她的钱包昨天被偷了.
Her purse （was stolen ）yesterday.
8.对父母说话应有礼貌.
The parents should （be spoked politely）.
9.这些衣服需要洗了.
The clothes （ need to be washed ）.
10.废纸和废瓶可以收集起来回收再用.
Waste paper and waste bottles can （ be gathered and reused ）.
希望能帮到你,祝更上一层楼O(∩_∩)O