Nowadays teenagers like to go to the fast food restaurant, ________, as the name says, eating needn’t take much time.

_____is too hard _____ a good solution to this problem.

There serious air pollution if people use more and more cars.

Look! That man looks like Mr Green.—It can’t be him. He _________ to America.

Sometimes most of us probably are angry ______ our friends, parents or teachers. [ ]