Without friendship, one won’t be happy _____ he is very rich.

way to school, suddenly it began torain, and we hurried to take______under a big tree

It’s _______ you do today that will make a differencein your life tomorrow.

Boys ,don’t lose ___in playing computer games .It’s bad for your eyes to play for a long time.

____ we is known to all, English is not very difficult to learn.