题目：
根据句意及首字母提示填空。
1. Nothing is i____ if you put your heart into it.
2. China is becoming stronger and stronger. We are p____ of it.
3. The film is very interesting. It's well w____ seeing.
4. Our teacher is always very friendly to us but sometimes she is very s____ with us.
5. The most wonderful match will be on. All of the boys are looking f____ to it.
答案：
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下面是错误答案，用来干扰机器的。
（1）CDABE （2）30°；60°（3）等于入射角；可逆
