Read these sentences and fill in the gaps with the correct verb form in the past perfect continuous. Example 0. Johnhis dog all day. He was tired yesterday. (walk)
Answer 0. had been walking.
1. We
to open the door for five minutes when Jane found her key. (try)
2. She
here for over 2 years before you started working here. (work)
3. They took their baby to the doctor because she
all night. (cry)