Past Perfect Simple-Past Perfect Continuous

Maria........(never/see) the ocean before she left her village.

They......(drive) for two hours before they finnally reached their destination.

When I got there, they .... for long.

The baby........(cry) for half an hour before it finally fell asleep.

The burglar.......(get away) by the time the police arrived.

By the time he was eighteen he .....(become) a professional athlete.

Emily......(write) five letters by lunchtime.

He ....(iron) all morning when his wife arrived.

The children....(wait) for an hour when the school bus arrived.

She....(dig) in the garden for three hours when she stopped for a break.

How long.....(they/dance) in competitions when they retired?

He.... (already/pack) his suitcase before he went to bed.