填空题。
【小题1】__________ (be) there many trees in this forest in the past?
—Yes, there __________ (be). But now there __________ (be) not many trees.
—__________ people __________ (plant) more trees in the future?
—I don't know.
【小题2】They __________ (plant) trees tomorrow.
【小题3】We __________ (visit) the farm next week.
【小题4】We're going to __________ (have) a picnic in the park.
【小题5】When are you going to __________ (play) chess?

We ______ for a spring outing next week. (   )

A．go

B．are going

C．went

I____ a kite next week.  （    ）

A．am flying

B．fly

C．am going to fly

_______ a concert next Saturday? (   )

A．There will be

B．Will there be

C．There can be

D．There are

—What are you going to be? （  ）
—_______.

A．I am going to sing.

B．I’m going to be a driver.