(4x2﹣5y)需乘以下列哪个式子,才能使用平方差公式进行计算( )
①继续与小刚正常交往 ②在班里将造谣者痛骂一顿
③不再与小刚来往 ④向家长和老师求助
(1) She bought a ____ (bath) suit last Sunday.(2)I like doing some ____ (shop) at weekends.(3)She hasn't ____ (feed) the cat yet.(4)There are about ten ____ (well) in that village.(5)Has the camera been____ (pack) yet?