IV. Put the verbs in brackets into the future or the present simple.
1. I promise you, I (be) a good student.
2. The plane (land) at 8.30!
3. I'm sure you (enjoy) this CD.
4. Elizaneth: There's someone at the door. Mark: I (go) and see who it is.
5. Don't worry. I (buy) these tickets myself.
6. She probably (call) me later.
7. I think the Earth (be) very polluted in 2100.
8. (she/like) the Russian countryside?
9. It's cold here. I (close) the window.
10. Our flight to London (leave) at 8 o'clock.

V. Complete the sentence with past simple or present perfect.
1. Lucy (break) her leg, so she can't go skiing.
2. She (be) a teacher for ten years, and she still enjoys it.
3. I never (see) the sea before.
4. We (see) Julie last night.
5. you ever (be) to London?
6. He (not/call) yet. We are worried.
7. John (finish) his homework two minutes ago.
8. When he (arrive)?
9. I (never/see) you in this library.
10. you (ever/be) to a theme park?