Describe the problem of air pollution and give a solution.
...
Passive voice: The builders painted the walls.
The walls were painted by the builders.
Describe the problem of deforestation and give solution.
...
We had ... great time at the park today!
such a
What are these?
wasps
My sister ... phone is broken is going to buy a new i-phone.
whose
That's the book ... my friend gave as a present.
which
