同学们，我们必须做许多有益的事情，我们才能快乐、健康地成长。请你以“How to be a heathy and happy child”为题，根据下列内容信息，写一篇不少于80词的英语短文。主要内容包括:1.保持快乐的心情；2.积极参加体育锻炼；3.思想单纯，努力学习，远离网络，结交益友；4.多与师长交流，分享心中的喃喃自语或情感。

Dear friends, we all want to grow up happily and healthily.so we have to do many things.__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

—How is Kate getting on with Laura?

—Very well. At the same time, they compete _____ each other _____ the higher grade.

A. with; for B. with; in C. about; for

David thought his mobile phone was broken _____ his sister pointed out that he didn't turn it on.

A. until B. unless C. after

—Mom, could I go shopping with you?

—Yes, you _____. But you must finish your homework first.

A. could B. can C. couldn’t

—Could I _____your bike?

—Sorry, I _____it to Jim yesterday.

A. borrow; lent B. lent; borrowed C. borrow; borrowed

Many people think that staying up late can help to lose weight, but doctors _____ that it doesn't work at all.

A. decide B. argue C. agree

When I looked out of the window, I saw children _____ snowballs at each other in the snow.

A. beating B. offering C. throwing

—Mr. Liu, I have some difficulty _____ the article.

—Remember _____ it three or four times at least.

A. to understand; reading B. understanding; reading

C. understanding; to read

We are sure we can _____them and _____the match.

A. win; beat B. beat; win C. beat; beat

—Can your cousin play volleyball with us, Liu Ming?

—Wait a minute, please. He _____ on the phone to his friend.

A. talks B. talked C. is talking