根据提示完成句子（每空一词）
我想知道我把那些信封放哪儿了。
I ____ ____ I put those envelopes.

根据提示完成句子（每空一词）
How can I get there? Could you tell me?（合并为一句）
Could you tell me ____ ____ ____ get there?

根据提示完成句子（每空一词）
That is the man to ____(who) we were speaking.