Past perfect continuous tense

Which tense is this?

"At last the bus came. I had been waiting for haft an hour!"

• Simple Past

• Past Continous

• Past Perfect

• Past Perfect Continous

The film..... by the time we got to the cinema.

• was started
• had start
• has started
• had started

My grandfather ___ in his old house for ages before he moved in with us.

• had been lived

• has living

• had been living

• has been live

I ___ with my problem for weeks before I found a solution.

• had been cope

• has been cope

• had been coping

• has been coping

They ___ for long before they lost radio contact.

• had not been flew

• has not been flying

• had not been flying

• has not been fly

We ___ in the rain since midday, so we were very wet.

• has been playing

• had been playing

• has been plays

• had been plays