请你把下列词组译成英语,相信你一定能成功。
你曾经去过长城吗?
?
我的老师们直到完成了这项工作才回家.
.
Excuse me, have you got any English novels?
Yes, I've got (几本).One is on my desk, the other two are on the shelf.
We'd better keep (收集)waste newspapers for recycling.
This is a place where children can play without (危险).