Let’s go skating. The ice is ______ for us to skate on.
—Please drive ______ when you pass a school. —OK.
In which picture can we see the students of the poor village reading books donated by us?
—Mum, 1 am hungry. May 1 have some______? —Of course. But don't eat too much.
—Look! A book is on the floor. Whose is it? —It ______be Rick's. It has his name on it.
—______ hard Tony is working! —Yes. We should learn from him.