Many young people volunteer in the northwest of our country .
— He, together with his parents ______going to visit Shanghai in July. How about you? — I'm afraid I have to stay at home __.
— There is a smile on Miss Gao’s face. She must be _______ with Sam’s work. — I think so. No one did as__ as him in our class.
— Could you please tell me something about the two_? — ____. They arc exchange students of No. 1 Middle School.
— will she stay here? — For .
Are these books ____. — No. they are not mine. They belong to ______.