1.这条牛仔裤我花了90元（用3种方法）
2.I will pay ? the meal because of my birthday. ？填 out on for in 选什么
3.I know he doesn't have a yo-yo. （同义句）I know he ? ? yo-you
4.That T-shirt costs 15 (同义句） You need to ? 15 ? that T-shirt
5.Lucy's room is biue. Lily's room is blue too.(合并为一句）
？ Lucy's ? Lily's ? ? biue.
6.How much is your shirt?(同义句）
How much ?you ? for your shirt
How much ? you ? ? your shirt
7.These CDs cot Lusy 50.(同义句）
Lucy ? ? for these CDs
Lucy ? ? on these CDs
Lucy ? ? in ?these CDs
希望大家回答（回答“？”应填什么，回答时请标好序号）谢谢大家