Past Perfect Continuous

Sarah ________(play) the guitar for 3 years before she first performed on stage.

They _______(exercise) outside when there was a sudden storm which made them run to cover.

We ________(wait) 45 minutes for the bus before it finally arrived.

I was exhausted because I _______(concentrate) since 7:00 am.

As he ________ (study) hard , Zack _____(be) sure to pass the exam.

We both ____(get) in trouble because I ______(help) her with her homework the whole time.

I ______(work) for 5 months when my boss _______(promote) me to supervisor.

They ________(decorate) the new house for hours and it ____(be) time to have a break.

I ________(not feel) worried about the presentation until I ____(see) the audience.

We _______(travel) around Europe for 4 weeks and had already _______(visit) 5 countries.