____the book if you are free, and you will learn a lot about how to study English .

Jim, Tom is looking for his English book. Is this ______?—No, that is______. I don’t know wherehisis.

September is _____ month of the year.

The doctor warned Pat against smoking as soon as possible and _____.

This sentence is too hard _____________ me understand.-Don’t worry. Let me explain it you. [ ]