—My grandfather was ill in hospital last week.—_______.A. I don't think so. B. I'm sorry to hear that. C. That’s a good idea
________trees we plant,________our city will be.
—Which coat is________,the black one or the gray one? —The black one,of course.
In spring,the day is getting________.
We should do some things to protect the environment.For example,we shouldn’t________too many trees.
—Remember this,children.________careful you are,________mistakes you will make. —We know.Mr.Li.