СРОЧНО!!!даю40баллов!
ПЖ, СДЕЛАЙТЕ ХОТЯ БЫ ПЕРВОЕ, СРОЧНО НАДО!!!!​

Объяснение:

N1)1. reached, had already finished; 2. has been collecting; 3. are flying; 4. haven't seen you, have you been; 5. hadn't finished; 6. are you doing; 7. was waiting; 8. comes, will go.

N2)1. had to be learned; 2.will not be build; 3. should be fed; 4. was not written; 5. are kept.