We work together to achieve our common purpose: ________ world that is safer, cleaner and healthier than ________ one we are living in.
David comes from______ America and he is ______honest boy.
Miss Zhao teaches_______ English. We like_______ class very much.
- What color are your pencils? -_______.
- Excuse me, do you have any comic books? - Sorry, I don't have_______. Ask Rose. I think she has.
He often_______ tennis with his friends. Now they_______ tennis at school.