33. I’d like to know why it had taken you so long to deliver this parcel (S + reported verb + Wh.qu + S + V(lùi thì); QKĐ `->` QKHT)

34. Can you tell me whether Harriet had finished the minutes of the meeting yet or not (S + reported verb + if/whether + S + V(lùi thì); QKĐ `->` QKHT; đây là câu hỏi lựa chọn nên chỉ dùng whether)

35. Please let me know when the new curtains for the hotel suites would be ready (gián tiếp Wh.qu; will `->` would)

36. Does the brochure say how often the bed linen in the villas was changed? (gián tiếp Wh.qu; HTĐ `->` QKĐ)

37. Do you know which metro station we should go to for the Eiffel Tower? (gián tiếp Wh.qu)

38. I wonder whether Vettel had won yesterday’s race or not (gián tiếp Y/N; QKĐ `->` QKHT)

33. Why did it take you so long to deliver this parcel?

⇒ I’d like to know why it had taken you so long to deliver that parcel

34. Has Harriet finished the minutes of the meeting yet or not?

⇒ Can you tell me whether Harriet had finished the minutes of the meeting yet or not

35. When will the new curtains for the hotel suites be ready?

⇒ Please let me know when the new curtains for the hotel suite would by ready

36. How often is the bed linen in the villas changed?

⇒ Does the brochure say how often the bed linen in the villas was changed

37. Which metro station should we go to for the Eiffel Tower?

⇒ Do you know which metro station we had better go to for the Eiffel Tower

38. Did Vettel win yesterday’s race or not?

⇒ I wonder whether Vettel won the previous day's race or not