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.

6西格玛质量管理的5个阶段中，主要工作是将改善成果进行标准化，并运用相关工具对实施成果进行监控是改善阶段。