Найдите ошибки в предложениях 1.They has already cooked dinner for their family. 2. My mother ever been in Moscow. 3. Sister have yet cleaned her room. 4. I have never was in your house. 5. Boys have just buy sweets for their friends.

1. They HAVE already cooked dinner for their family
2. My mother HAS NEVER been TO Moscow
3. Sister HASN’T cleaned her room YET
4. I have never BEEN in your house
5. Boys have just BOUGHT sweets for their friends