— I hope you don't mind my opening the window.—______ It's much too hot here.
Could you tell me?
I like our teachers because they can allow us _________what we think.
There used toa clean river in front of my house, but now everything has changed.
---Who is running on the sports field? ---Itbe David, He is ill at home.
Look at the name on the book and it must belong to_________ .