Travelling by plane is safe
--> It's______________________
You should finish your test on time.
-->You have____________________
Living in a city is more comfortable than living in a countryside. (so.......as)
-->Living in a small town is__________________
Planes are faster than trains.
--> Trains are_______________
In Spain,the lucky color is red,but in Argentina it is pink.
-->The lucky color in Spain is______________
It is necessary for them to work on a school project.
-->They have___________________________