Past Perfect Continuous

We __________ for 12 hours when he woke us up. (sleep)

They ___________ at the station for 90 minutes when the train finally arrived. (wait)

We __________ her ring for two hours and then we found it in the bathroom. (look for)

I _________ for a long time, when it suddenly began to rain. (not / walk )

How long __________ English before she went to London? (she / learn)

He ___________ in the rain too long. (sing)

• had been singing

• have been sung

• hadn't sang

He _______ less than an hour when he ran out of petrol. (drive)

• had being driving

• had been driving

• had drove

They were very tired in the evening because they _______ on the farm all day. ( help )

• had been helping

• have helped

I _________ all day; so I wasn't tired and went to the disco at night. ( not / work )

• had been working

• hadn't been working

• have not being working

They _________ all day so their legs were sore in the evening. (cycle)

• had been cycling

• had being cycling