阅读下面短文，从方框中选择适当的词语填空。方框中有两个词语为多余选项。

reading       leaves       others       out       must       clean       quickly       their       dirty

It’s 5:30 p.m. on Friday. There are lots of people on the subway. Some are playing with 【小题1】 phones. Some are listening to music. And some are talking with others. There is a young man in a black shirt. He is eating an egg. After he finishes eating it, he 【小题2】 the egg shell pieces (蛋壳碎片) on the floor!

“You make the subway 【小题3】 ,” a woman says.

“You 【小题4】 pick (捡起) them up,” an old man says.

But the young man doesn’t listen to them. He gets his phone 【小题5】 and plays with it.

All the people feel angry (生气的). What can they do to let the young man clean the subway?

A boy in the school uniform is 【小题6】 a book. He sees what’s happening (发生). At that time, the subway stops. The boy 【小题7】 picks up the pieces and gets off. How cool he is!