Question

My grandmother _____ a very tasty meal by the time we came back back from our school a) cooked b) was cooking c) had cooked d) has cooked

Answer 1

Had coocked
потому что там время past perfect,ибо есть слово by

Answer 2

C) had cooked mmmmmm

Answer 3

The correct answer is: c) had cooked

"My grandmother had cooked a very tasty meal by the time we came back from our school."