In this country, ___________ children shouldn’t smoke.A. five-years-old B. five-year-old C. five-year-olds
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 ________.