Do you have a tennis racker?
she has a basketball 改一般疑问句：Does she have a basketball?
they have computers 改否定句：They don't have computers?
does she have a pingpong bat 改为复数：Do they have pingpong bats?
john likes banana 改否定：John doesn't like banana.
do you have a pencil case?改陈述句：l have a pencil case.
she doesnot play coccer 改肯定：She plays soccer.
sue has a small sports collection 改否定：Sue doesn't have a small sports collection.
this is a nice watch 改复数：These are nice watches.