He is going to study hard at math. He wants to be ________ engineer.
—-Did you go to Peter’s birthday party last Saturday? —–No, I didn’t , though I.
.—This math problem is too difficult. Can you show me _______, Dad? —Sure.
.— _________ city! — Yes.Tourists from all over the world come to visit it every year.
— Tom talked with a friend of _______ on the Internet for a long time yesterday.
— Can you play chess? — No, but I can play ________ piano very well.