更正楼上第1/2题!
1.They have some chairs.（改为一般疑问句）
Do they have any chairs?
2.The twins have some model planes.（改为否定句)
The twins don't have any model planes.
3.（John）has a tennis racket.（对括号提问）
Who has a tennis racket?
4.They have a big boat .（用Jim替换主语）
Jim has a big boat.
5.Do you have any pencil boxes?（作否定回答）
No,I don't.
6.We don't have any pencil boxes.（改同义句）
= We have no pencil boxes.
7.Whose ball is this?（改同义句）
Whose is this ball?
8.This is （Jill’s）basketball.（对括号提问）
Whose basketball is this?
9.He is my good friend.（改同义句）
= He and I are good friends.
10.Is this desk Andy and Millie's?（改同义句）
Is this Andy and Millie's desk?
11.Lily has a comic book.（改否定句）
Lily doesn't have a comic book.