根据短文内容，完成下列句子，每空词数不限。
Tim: Mom!  Where are my shoes?
Mom: Are they under your bed?
Tim: No, they aren’t.
Mom: Are they behind the door?
Tim: Oh, yes. Here’s one shoe.
Mom: Let me see. Where is the other one?
Tim: Oh, my God!  It’s 7:50. It’s time for school!  I’m late.
Mom： Don’t worry, dear. Let me help you. Oh, look at the chair!
Tim:  It’s under the chair.The dog is playing with it.

函数f（x）=xcosx在﹣π，π上的大致图象是（　　）

    Jim is from New York(纽约). His home is near the school. So he often goes to school by bike. Every day it takes him about fifteen minutes to get there. He always gets to school on time(准时).

    Mary is a student of a middle school in Tokyo（东京）. The school is far from her home. Every day she has to go to school by subway. It takes her about forty minutes, she often gets up very early because she doesn't want to be late for school. She is a good student.

    Jenny's home is in London. It is far from her school. She usually goes to school by bus. This kind of bus has two floors. It takes her an hour every day. She must get up very early every morning. She often gets there early.

    Tom is a student of a middle school in Iceland（冰岛）. There is snow all year around. So he usually goes to school by sledge（雪橇）. It takes about twenty minutes to get there. He is sometimes late for school.