One important aim of our school is to prepare us for the future        we can face all the challenges with confidence.

I don’t have to introduce him to you        you know the boy.

My Chinese teacher is very knowledgeable        she reads lots of books.

        our teacher is ill,         he still comes to school to work.

—Look! Some people are running the red lights.
—We should wait        others are breaking the rule.

—Hey, man. You can’t cross the street now. You have to wait        the traffic lights turn green.
—Oh, sorry and thank you.

       you don’t give up, your dreams will come true.

My father was preparing for his speech         my mother was doing some washing last night.

He’s not a perfect child. He sometimes talks back (回嘴；顶嘴)       his parents talk with him.

We can easily become unhappy       we work out our problems in our daily life.