.Complete the sentences with the past perfect of the verb in brackets. 8 points

1. Kevin___________(go) home by the time I arrived.
2. Ethan suddenly realised that he______________(leave) his laptop on the train.
3. Mum was annoyed because I___________(not clean) my room.4. _____________(they / study) English before they went to the USA?
5. We were hungry because we _____________(not eat).
6. My phone didn't work because I_____________ (not/charge) it.
7. Why didn't you want to watch the film?__________(you / see) it before?
8. Sally was embarrassed because she______________(forget) her dad's birthday.​