We can have ________ bluer sky if we create _________less polluted world.

26I like the feeling of being up high in the skyI can’t think ofanything_______in the world

While he plays extremely well in individual sports, James is thought to co-operation in team events.[ ]

He likes to sleep with the windows ____________.

Becky has ______ fed the dog, but she hasn’t watered the plants ______.