Sara kept the secret to ________ and nobody knew about it.

You borrowed some money from me last year, Mr Green. — Did I? _____did you lend me? [ ]

As ________matter of fact, _________ beauty of __________ nature there made an excellent impression on me.

What were you and your sister doing when the telephone rang?— I while my sister was eating.

I don’t know ______ watch this is. Do you know? ——It might be Gao Lei’s.