—______to give back the books to the library before Friday.—OK. I will.
Our classroom is very dirty ,let’s _____it_______.
Whose book is that ?It _______belong to Linda .Look !Her name is on it .
________I smoke here ?----No. you can’t.
.---______you swim ? ----Yes, but I’m not good at swimming .
Billy is a nice boy . he knows a lot , but he never ________.