My friend ______ a birthday present for me last Sunday. A. buy B. buys C. bought
---The news he will come back made us _______.---Come on. We must finish the work and don’t _______.
The book is well worth ______. Everyone ______ buy one and read it.
You have grown up and you should _______ what you have done .
It’s difficult for us to __________ each other because we have spent so much time together .
Smoking ______ in public places in many countries. So you ______ smoke here.