Ответ:
1 Has Henry ever taken his sister to the museum?
2 How many pets have they kept this year?
3 Who has watered the flowers lately?
4 Why hasn't she lain in the sun this summer?
5 Who hasn't returned the books to the library yet?
6 How many times has your sister visited your ...?
7 Why haven't you finished the work yet?
8 Whose animals have died recently?
9 Who has cut anything with ... ?
Объяснение:
2-с,3-a,4-c,5-c,6-a,7-c,8-b,9-c
They have just taken the bottles to the recycling plant.
Independent scholar
Polite secretary
Shy clerk
Chatty translator. ;)