Perfect Aspect C1

I'm sure there's a reason why he didn’t turn up. He may thought you meant half past eight.

What a great movie about Hawking! It’s so strange that I haven’t heard / hadn't heard about him before.

I have been traveling for hours before I stopped for lunch.

The city may ____ (recover) from the recession, but it ’s still facing problems with crime.

It was the third time the city .................... (destroy) by an earthquake.

Keep working until you have finished / will have finished the paper.

She said she hasn't been to Buenos Aires before last year.

It is believed that the number of university graduates will had doubled by 2020.

I’ve been knowing my neighbor for years but I have been talking to him just once.

What’s that noise? – What noise? I haven't been hearing / haven't heard anything

The new motorway _____ by this time next month. (complete)

Having visited the city several times, Kasia was starting to feel at home there.

Had been completely rebuilt after the fire, the town hall was reopened last year,

___ up as part of the council's 'clean up the city' campaign, the area is now more popular with affluent families. (do)

We had just left / had just been leaving the gas station when the car broke down.

By 2030 I _________ (study) English for 10 years

I’ve known / 've been knowing my best friend for all my life.