书面表达。
假如你是李华，暑假期间有幸成为上海世博会的一名志愿者。在此期间的一次经历给你感触较深。
请根据下表内容给某英文报社写一封信，讲述一下你的这次经历及你的看法或建议。
词数：100左右。
注意：开关和结尾已给出，不计入总词数。
Dear Editor,
___________________________________________________________________________________
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Yours ever,
Li Hua
One possible version:
Dear Editor,
This summer I worked as a volunteer for the Shanghai World Expo. Now the Expo has lowered its
curtain successfully, but one of my experiences during the Expo has been disturbing me a lot.
It was a sunny Saturday noon and many visitors were having lunch on the grassland. I saw a foreign
couple and a Chinese couple who had just finished their lunch. Without any hesitation, the Chinese couple
threw their leftover food and the plastic bags on the grass.
Astonished and shocked, the foreign couple said, "It will do harm to the environment by littering
carelessly."
The words of the foreign couple strike my mind so much. Shouldn't we strengthen our awareness of
environmental protection? The unacceptable phenomenon of spitting, littering and picking flowers in public
places should be banned completely. A good environment calls for action and participation of everyone.
We must make every effort to cherish our environment.
Yours ever,
Li Hua