改为同义句：why don't you ask the man over there?why ___ ___the man over there?
顺便翻译一下：晚上灯都熄了.
The lights ___ ___ at night.
我们正在调查这个问题.
We are ___ ___ this prodlem.
你在想什么?
What are you ___　___?
你几点到火车站?
When will you ___ ___the teain station?