2.I wanted to understand the sentences,so I        (查询它们) in a dictionary.

1.I was afraid to ask questions         (因为) my poor pronunciation.

假如你所在的城市正在创建"国家级卫生城市"，作为该城市的一员，你会有许多感触和想法。下面请你以"How to set up a national healthy city?"为题，根据所给提示写一篇80—100词的英语短文。开头和结尾已给出，不计人总词数。

要求：包含所给提示，意思连贯，语法正确。短文内容可以自由发挥。

提示：throw rubbish扔垃圾；talk loudly大声喧哗；smoke吸烟;spit吐痰"n public在公共场合；give seats to the old and children给老人和小孩让座；be

polite to others又氺他人有礼貌；obey traffic rules遵守交通规则；form good life habits养成良好的生活习惯；turn off the lights关灯

How to set up a national healthy city? Our city is trying to set up a national healthy city. As a member of the city,I think

I'm sure our city will become more and more beautiful and cleaner as long as we all try our best to do something for it!

55.Whenever you meet problems,you should       (沉住气) .

54.She listened to the tape and read the new words three times        (连续几次地) .

53.Boys and girls,please        (关掉) all the lights when you leave the classroom.

52.When I arrived at the music hall,all the people had        (赶到;露面) .

51.I'm sure we'll win the game tomorrow if we       (齐心协力) .

50.Jenny thinks r       waste things helps to protect our environment around us.

49.Those police o        were looking for a girl who left school without telling her teachers last Friday morning.