Are you interested ... art?
in
How can he afford TO BUY / BUYING that flat?
to buy
What were you doing when you ... the text? (GET)
got
DID / WERE your parents use to have mobile phones when they were younger?
did
I AM HELPING / WILL HELP you later, if you want.
will help
If we ..., we'll catch the bus. (HURRY)
hurry
We GIVE / ARE GIVEN a lot of homework every day.
are given
There are A FEW / MUCH / LOTS biscuits here. Do you want one?
a few
I phoned her office, but it HAS / HAD already closed.
had
I ... that aliens have visited the Earth. (NOT BELIEVE)
don't believe
I'm sorry I'm late. How long HAVE YOU BEEN WAITING / HAVE YOU WAITED?
have you been waiting
I ... when I suddenly felt a pain in my leg. (SWIM)
was swimming
