Make the sentences negative and interrogative

1) David had booked the room in the hotel before.

2) We had decorated the hall for the disco party by 4 o'clock.

3) They had agreed about the time of the meeting by Monday.

4) Sally had vacuumed the carpets before my arrival.

5) My parents had seen that performance before.

6) They had left for the airport before 5 o'clock.

7) You had fixed that camera by Tuesday.

8) Peter had paid the electricity bill before the weekend.

9) Wendy had shown me her fancy dress for the New Year party before.

10) It had stopped snowing by 9 o'clock.

1) David hadn't booked the room in the hotel before. Had David booked the room in the hotel before?
2) We hadn't decorated the hall for the disco party by 4 o'clock. Had we decorated the hall for the disco party by 4 o'clock?
3) They hadn't agreed about the time of the meeting by Monday. Had they agreed about the time of the meeting by Monday?
4) Sally hadn't vacuumed the carpets before my arrival. Had Sally vacuumed the carpets before my arrival?
5) My parents hadn't seen that performance before. Had my parents seen that performance before?
6) They hadn't left for the airport before 5 o'clock. Had they left for the airport before 5 o'clock?
7) You hadn't fixed that camera by Tuesday. Had you fixed that camera by Tuesday?
8) Peter hadn't paid the electricity bill before the weekend. Had Peter paid the electricity bill before the weekend?
9) Wendy hadn't shown me her fancy dress for the New Year party before. Had Wendy shown me her fancy dress for the New
Year party before?
10) It hadn't stopped snowing by 9 o'clock. Had il stopped snowing by 9 o'clock?