Rewrite the sentences without changing the meaning

giúp mình
----- Nội dung dịch tự động từ ảnh -----
Rewrite the sentences without changing the meaning.
1. He always studies hard though he encounters difficulties.
Despite ..
2. Phong said "My parents are very proud of my good marks."
Phong
3. "When does your school vacation start?"
She asked me ...
4. Because the weather was cold, we had to cancel our picnic.
Because of.