Do you have any plan for this summer vacation, Mary?— Sure, I’ d like to be a volunteer and help to ______ the Central Park.

We know Jackie Chan _____ movies are very popular with the young. [ ]

Taking a walk after supper is really a ____ way. –____. It keeps us healthy, too.

Is this camera mine? —No, it isn’t________. It’s________.

My father will buy some books for me . [ ]