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. John was very tired. He
runing
. (run)
2. She
working
here for over 2 years before you started working here. (work)
3. She
learning
English for four years. It was exciting. (learn)