摘要： All the people became happy again . A when I went in B because they had a good time C because the food was delicious D because they heard they had one more person there (11) Light and shadow are friends. They usually go together. We receive light every day. At the same time, we produce shadow. Light can’t shine through you. Your body stops it from passing. There is only a dark spot on the ground next to you. The light can’t reach the dark spot. This is your shadow. At noon the sun shines over your head. Your body stops very little light from reaching the ground. So your shadow is quite short. But in early morning or late afternoon, the sun is low in the sky. Its light moves over more of your body. Then your shadow is quite long. Your body keeps a lot of light from reaching the ground. We love sunlight. Because neither animals nor plants can live without it. Sun light can make people healthy. We love shadow, too. Most of us like to stand in the shadow of a tree or have a walk in the shadow of trees in summer. Light and shadow usually go together.

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