they know waht each other are doing

they know waht each other are doing They are right_____from each other waht are you doing they know what each other is doing.为什么错误错在那里. they know each other还是others,为什么 They are quarreling ________ with each other. happy they are-----------(see)each other. they are quiet【】 from each other They are happy to see each other They are being a____ with each other. They are twins .They are s_____ to each other. they are across from each other还是they are next to each other