=>
29. they -> which (đtqh chỉ vật)
30. despite -> although (although S V)
31. haven't -> have (never mang nghĩa phủ định -> câu hỏi đuôi khẳng định)
32. is it -> it was (câu tường thuật : asked sb + từ để hỏi S V(lùi thì, HTĐ -> QKĐ))
II/
1. You'd better put your money in the bank.
-> had better V : nên làm gì
2. He was annoyed because his secretary came to work late.
-> because S V : bởi vì
37. No other pupil is as industrious as Tom.
-> so sánh bằng as adj as