1. do, так как это present simple, и you это не it/he/she, иначе было бы does
2. don't. present simple, и I это не it/he/she, иначе было бы doesn't
3. are. present continuous, you это множественное число
4. Does. present simple, sister это she
5. is, present continuous. don't, present simple.
6. do, present simple.
7. does, present simple.
8. doesn't, present simple
