Is this your baseball转肯定句
Is this your dictionary?改为肯定句
is this your computer 改肯定句
Is this your pen变成肯定句和否定句
is this your school?的肯定句和否定句
Is this your shirt?的肯定句与否定句
This is his baseball(改为否定句)
baseball here is your连词成句
Is that your baseball 改为复数句
Is this tall girl your sister?该肯定句
is this your pen(变为肯定句)
Is this book in your schoolbag?(改为肯定句)
Lucy's baseball,your baseball,that is not,it is ,连词成句