1.) Yesterday we (to learn)
2) Scientists (to think)
how life (to appear)
on our planet.
that 4.6 billion years ago the Earth (to represent)
a swirling mass of boiling hot rocks and gases.
3) Jason, what you(to do)_
the results of my experiment.
4) If the matter (not/to be)
today.
5) Peter (to wish)
at such a late hour? -I ( to type)
urgent, I (not/to ask)
he (to know)
you to come
more about this subject.