句型转换
（1）They have been in China for nine years.（对划线部分提问）
____  have you been in China?
（2）Jim sent me a few snow globes.（改为同义句）
Jim ____  a few snow globes ____  me.
（3）Leo has been teaching in China for two years.（改为一般疑问句）
____  Leo____  teaching in China for two years.
（4） He rides his bike every day.(用at this time yesterday改写)
He ____  his bike at this time yesterday.
（5）Tom has been making kites since four years ago. (改为同义句)
It is four years ____  Tom____ to make kites