完形填空
Sally is 76 years old. She has no sons 1 daughters. Her husband（丈夫） died(死) 15 years 2. But she didn't move into an old people's home. She would like to look after(照顾) herself . Every morning she gets up early and goes for a walk in the park. She likes doing sports in the park, too .When she does these things, She feels very 3.
Every day she spends two hours 4 children with their math. And she was a popular 5 before she retired(退休) from a middle school. When the children come 6 help, she is always happy to help them. She often says to the children,“I'm so 7 to be with you. You are all my kids. ”
When people ask her 8, she says,“I love children and 9 staying with them. Every kid is a 10 for me. ”
...依次观察左边三个图形，并判断照此规律从左向右第四个图形是( )