Present Perfect
Sea levels ______ (rise) gradually in the last 10 years.
have risen
we _____ (wake up) late today.
woke up
We ____ (arrive) when the show started.
had arrived
Biologists ______ (study) mosquitoes in Africa.
have studied
They ____ (swim) upshore before a shark ate them.
swam
She couldn´t sleep because she _____(watch) a horror movie.
had watched
O block´s crime rate ______ (drop) by over 10%.
has dropped
I _____ (think) of a good parlay the other day.
thought
i _____ (not) to Australia
have not been
(present perfect continous)
Developers ______ (code) the game for 5 years.
have been coding
we _____ (be) at the cinema last night.
were
it ____(eat) when they came.
had eaten
(Present perfect passive)
This box ______ (make) by a factory.
has been made
Past Simple Passive
For some time not a word _____(speak)
was spoken
Past perfect passive
turn the following sentence into passive:
Dr. Richard had saved Silvia's life.
Silvia's life had been saved by Dr. Richard