Viết lại câu cho nghĩa không đổi

viết lại câu cho nghĩa không đổi
1.She was able to ride whe she was
=>She could...
2.Why don't we stay at home now
=>What about...
3.My class has 10 boys and 20 girls
=>There are ...
4.She  want to donate to homeless people
=>She is ...