Упражнение 1.
1) Her brother has curly hair
2) Тут написано правильно, исправлять не надо
3) Jessica has a bad cold
4) Тоже правильно
5) I did well these exercises
6) Правильно
7) Mar bought those shoes at the market
8) They have dinner in the big dinning-hall
Упражнение 2.
1) Steve gets a lot of money from his parents
2) She showed her room to me
3) They often send letters to me
4) Jane is going to write to me
5) My friends often give me books to read
Упражнение 3
1) My friend - подлежащее, often - обстоятельство, visits - сказуемое, his parents - дополнение
2) Every day - обстоятельство, she - подлежащее, buys - сказуемое, a sandwich and coffee - дополнение, in the cafe - обстоятельство