it cost me an arm and a leg 求同义句! It __________ __________ me___________
问题描述：
it cost me an arm and a leg 求同义句! It __________ __________ me___________
答
It (is) (expensive) (for) me.
我想你（或者你的老师）把空格放错位置了吧
cost someone an arm and a leg这个是固定用法,说东西很贵 (very expensive)