1 is singing, sings
2. has
3. are not talking, are watching
4. Do you like watching TV?
5. Ususlly goes, is leaving
6. visit, often visits
7. are swimming, usally swim
8. is writing
9. sometimes have, are having
10 is having
11. Where does Alex live?
12.likes riding
13. are playing, are singing
14. always cooks
15. what do you usually do on weekends?
16. is giving , is
17. starts
18. is writing, always writes