Respuesta :
1) What's being built here?
2) will not be
3) If you don't
4) Will never go
5) I didn't finish
a) What has been built here ?
b) Your children won't be healthy if you don't give them many fruits
c) Maria has never been to France
d) I am afraid I haven't finished my work yet
active = activity
to explain = explanation
to learn = learning
to bring up = upbringing
to ignore = ignorance
hope I helped !