U2 has been/ is a band from Ireland.
is
They ... (never/see) the Eiffel Tower before.
have never seen
She ... (think) about changing her job because she isn't happy about it.
is thinking
I ... (know) this song since I was a child.
have known
She ... (teach) Physics for more than fifteen years.
has taught
The evening performance ... (start) at 8 pm.
starts
She ... (go) to the bank to pay some bills. She'll be back in an hour.
went
More and more people ... (recycle) their rubbish now.
are recycling
The teacher ... (give) us really difficult tests all year.
gave
