题目内容：

Tom came to China.He made a lot of friends.(改为同义句）

优质解答

Tom came to China.He made a lot of friends
=Tom made a lot of friends in China

追问：

Tom ( ) ( ) a lot of friends ( ) he ( ) to china.

追答：

Tom ( didn't ) ( make ) a lot of friends ( until ) he ( came ) to china.