1. 1) c; 2) a; 3) d; 4) e; 5) f; 6) b.
2. 1) I always clean my flat.
2) I usually play football at the weekend.
3) Yes, I do.
4) I sometimes go outside on my free time.
5) Yes, I do.
3. I always do my homework.
I sometimes go outside.
I usually play football at the weekend.