1. Listen! Someone ______ (sing) in the next room.
2. I usually wake up (wake up) at 7 am, but yesterday ______ (wake up) at 9 am.
3. We ______ (not/buy) any souvenirs last summer.
4. I promise I will ______ (be) on time.
5. Look at that man on the ladder! He ______ (fall).
6. Where ______ you ______ (go) for your next holiday? (план)
7. An elephant is ______ (big) than a horse, but a whale is ______ (big) animal of all.
8. She ______ (have) a bath two hours ago.
9. Tom never ______ (do) his homework. (Present Simple)
10. I think people ______ (live) on Mars in 2100.