We __ the book to the library by seven o'clock A)had returned B) has reture C) had return D) was return

Question

Английский язык: We __ the book to the library by seven o clock A)had returned B) has reture C) had return D) was return​

sirkovake · Answer

We had returned the book to the library by seven o clock....

We __ the book to the library by seven o'clock A)had returned B) has reture C) had return D) was return​