=>
Part 2/
5. Because Trung has to do a lot of homework, he can't go out with us.
-> Because S V : bởi vì
6. Some new schools have been built in this city.
-> bị động HTHT have/has been V3/ed
7. Dave asked Susan why she was so sad.
-> câu tường thuật dạng WH questions asked + từ để hỏi + S V(lùi thì, HTĐ -> QKĐ)
8. If you don't work hard right now, you won't pass the exam.
-> câu đk loại 1 If S Vs/es, S will (not) V

Part 3/
9. Peter plays badminton every weekend.
-> every (HTĐ -> Vs/es)
10. She is afraid of going out alone in the evening.
-> be afraid of Ving : sợ
11. Last month, he intended to buy that house but he didn't have enough money.
-> last night (QKĐ -> V2/ed)
12. My father is the person who taught me the first lesson on kindness.
-> who (đtqh chỉ người)