完形填空（本大题共10小题。每小题1分，共10分）
阅读下面短文，选择最佳的答案。
Do you often smile? Do you like a smiling face?
Smile is very      . It is like a spring wind. It lets us feel warm in our      . It is like the sunshine and it makes us       in our eyes.
Smile is very important       our lives. When you are sad, make a big smile, and it can make you happy again. When you        worried, make a big smile, and it can help       keep cool again. When you aren’t successful, make a big smile, and it can help you try again and        harder.
Smile is very easy,       it is very useful. So let’s learn to smile. Everyone      smiles. When we give others a smile, we can feel happy, too. When you see        smiling faces, you can feel warm.
Let’s smile every day. Don’t you think so?
A. nice     B. sad       C. hungry
A. eyes     B. hearts     C. mouths
A. bright   B. beautiful  C. brave
A.under     B. on         C. in
A. am       B. is         C. are
A. I        B. you        C. he
A. smile    B. rain       C. work
A. but      B. because   C. or
A. needs   B. sees       C. does
A. the other’s B. others’ C. another’s