PAST PERFECT CONTINUOUS

Billy (a)   (look) for his sales receipt for an hour before he found it in the kitchen.

John (a)   (buy) rare books for ages, so he had a lot of them.

Gillian (a)   (design) efficient gadgets for a long time, so she was very good at it.

My mum had no money left because she (a)   ( shop) at the supermarket all morning.

Mia (a)   ( search) for a special party dress for months before she found the perfect one online.

Mrs. Shelby (a)   (read) traditional books for ages when she decided to buy an e-reader in 2011.

(a)   (you/use) the smartphone for long when the screen went blank?

(a)   (you/use) the smartphone for long when the screen went blank?

The old man (a)   (sleep) on the corner until you came.

Daniel (a)   (not work ) for weeks before he was offered a management position.