Thay are at a good price.这里为什么用的是at?

Thay are at a good price.这里为什么用的是at? the students are ___ english.a.good inb.good forc.good to d.good at Tigers are good at( ) look at these photos.thay are hers.是对的吗 Are thay Dave is brother? ___you____your classmate?A:Are good with B:Are good at C:Do good with D:Do good for What are you_____?-Dancing.A.good B.good with C.good at写出为什么 We have clothes at a very good p什么 What are you good at in a ____ to English All the clothes are at a good __ The clothes at MrCool's store are () a good price. They are at a very good price.(改为同义句) thay have nothing in ( ) but they are really good feiends前三个字母是com 一共有六个字母 _______ your parents.原因A.are good withB.to good toC.be good withD.to be good at what are you good at Are you good at English? What are you good at Are you good at ____