Выберите правильную форму местоимения.1. I've heard ...(her/she/she's) sing "Ave Maria"2....

Question

Выберите правильную форму местоимения.
1. I've heard ...(her/she/she's) sing "Ave Maria"
2. He didn't see ... (him/his/he) come in
3. I believe ... (they/their/them) to know this subject well.

Answer 1

1. I've heard her sing "Ave Maria"
2. He didn't see him come in
3. I believe them to know this subject well.