----- What are you going to do this weekend ?   ------ I ______ yet .

 I don’t know if she      to the movie. If she      ,I’ll tell you.

 There      serious air pollution if people use more and more cars.

 –-Where is Mr Jackson?-- He         in the park. He        there every Sunday afternoon.

Tom often ______ TV in the evening. He’s _____ TV now.

Don’t worry about your grandmother, All the old people       in China now.

 The teacher        class when I      the classroom at ten o’clock yesterday morning.

 My father           my hometown for two months.

I don’t know when he _______ tomorrow, when he    tomorrow ,I will tell you.

— A computer is very popular and helpful .— I think so. It _______ in many different fields.

 My uncle is an experienced teacher. He_____English since 2002.

Mr. Green _______ his lessons when I went into his office.

—Tom, What did you do last Sunday morning ?— I _______ my grandma with my parents .

 —Is your brother at home?—No. He ________ the library. He hasn’t come back yet.

Don’t worry. He ________ you as soon as he gets home.

 —Oh, you look tired. Why?—I ________ to the Great Wall yesterday. It was really wonderful.

Mr. Wang _______ dinner with his family now. They look very happy.

 The big fire_____ out quickly two weeks ago.

Mr. Green          his lessons when I went into his office.

Julie’s father _____ to London last month. He ______ there three times.