是句型变换It's over a year since Cathy came to China能变几句是几句

是句型变换It's over a year since Cathy came to China能变几句是几句
是句型变换
It's over a year since Cathy came to China
能变几句是几句

是句型变换It's over a year since Cathy came to China能变几句是几句
Cathy has been in China for over a year.
Cathy has been in China for since over a year ago.
Cathy came to China over a year ago .