They are relaxing at home.这里为什么用relaxing,而不用 relaxed?

They are relaxing at home.这里为什么用relaxing,而不用 relaxed? They are relaxing at home. 这里的relaxing是动词吗relaxing relaxed relax 怎么用怎么区分? they are ( ) at home for vacation ,they think staying at home is ( ) A relaxed ,relaxingB relaxing,relaxed C relaxing ,relaxing D relax,relaxwhy they （are relaxing） at home.对括号提问 ____ ____ they ____ at home? They are They are --- at home after walking a long way A relaxing B relaxed They are ( )at home( )this sunday.A relaxing；forB relax;toC relax；onD relaxes;for they're relaxing at home中文 How _____ (happy) they are relaxing! A___________?They are very relaxing.A:___________？B:They are very relaxing. They are ( ) at home.A.relax B.relaxing C.relaxes D.relaxed选B,or选D?3Q The children are playing games happily.They look________.A.relaxed B.relaxing C.relax D.relaxes they are sitting at a What are they good at? They are at the bus what they are staring at? 是they at home还是they are at home为什么 They (are relaxing) at home.画括号部分提问 ____ ____ they ____ at home.This book is not as interesting as that one.改为同义句That book is ____ ____ ____ ____ this one.Tom is thinner than Sam.改为同义句Sam is ____ as ____ ____ Tom.He where are they I think they are at a ()()一空一词