Ответ:

Объяснение:

2) The tourists had been walking for 10 hours before they returned to the hotel at midnight.

3) The children had been playing for 5 hours before they went to 9 p.m.

4) Ted had been training for 1 year before he won the last tennis tournament.

5) Nick had been working on his project for 2 weeks before he presented it the day before yesterday.

6) I had been searching topic for my report for 5 hours before Linda helped me to find it.

7) The plane had been flying for 8 hours before it landed in London at 8 a.m.

8) Susan had been working in the team for 5 years before she left it last summer

9) The Jones had been preparing for 1 week before they invited a lot of friends to their party.

10) Mary had been thinking for 2 weeks before she gave Christmas presents to all her relatives