Teenagers are old enough to look after (他们自己).
There are a lot of after﹣class (活动)in our school.
It is rude to talk loudly on the phone in (公共的)places.
My father always (鼓励)me to try different things.
Tom always pays (注意)to his teacher in class,so he is making progress.
Our National Day falls in (十月),the tenth month of a year.