Which perfect verb tense is used to describe a future action that will end before a different future action begins?

They ___________ duty since 8 a.m. (a. had been performing b. have been performing)

She ______________ finished her homework before I offered to help. (a. have completely b. had completely c. will have completely)

I didn’t see him.

She _________ the meal for one hour. (a. had been cooking b.has been cooking)

I went to the park yesterday.

Change this passive sentence into active voice: A novel has been written by her.

It had been raining since morning.

I _____________ my resume for that job and hope to be invited to interview for it. (a. have submitted b. had submitted c. will have submitted)

The kids ___________ cartoons all day. (a.has been watching b.have been watching)

The mother took the child to the doctor.

You will regret this.

Which helping verb accompanies a past perfect tense verb?