Read these sentences and fill in the gaps with the correct

Read these sentences and fill in the gaps with the correct verb form in the past perfect continuous.

Example 0. John __________ his dog all day. He was tired yesterday. (walk)

Answer 0. had been walking.


1. I could smell cigarettes. Somebody___ (smoke)

2. She _____here for over 2 years before you started working here. (work)

3. She______English for four years. It was exciting. (learn)