Какой вариант не верный? i - my; she - her; we - your; they - their?

their machines work better than his machines. her holiday expenses are larger than my holiday expenses. the parking space in my region is more expensive than in his region.

i have abirthday today.i'm going tocelebrate itwith friends.theycome to mein the evening.this daywill be the bestthis year.