Question

1 They don’t use fossil fuels any more. STOPPED
They _____________________________________________ fossil fuels.
2 Over 20 posters were displayed on the notice boards by the time I arrived. PUT
They _____________________________________________ over 20 posters on the
notice boards by the time I arrived.
3 She has had three visits to the rainforest this year. BEEN
She _____________________________________________ the rainforest three times
this year.

Answer 1

1) They have stopped using fossil fuels.
2) They had put over 20 posters on the notice boards by the time I arrived.
3) She has been to the rainforest three times this year.