Odmień czasowniki w nawiasach w present simple/present continuous:

1. I (not/understand) this problem.
2. My sister (believe) in ghosts.
3. The dogs (run) running in the garden now.
4. Listen! Mary (sing) singing a beautiful song.
5. I (not /want) to work in France.
6. Kate (tidy) her room at the moment.
7. We often (travel) to Great Britain.
8. At our school students (use) computers a lot.
9. (he/walk) with the dog now?
10. (you / live) in a flat or a house?