The nice rackets are the twin's.错在哪里

The coats are over there A twin B twins C twin's D twins' These are their rackets .O_____are in the classroom. The twin 后面是is还是are? The clothes are all nice,I don't know what one to choose 哪里错 "The pair of trousers are very nice"这句话哪里错了 The _____ coats are over there.A.twins B.twin's C.twins' 改错 The twin's name are Andy and Adam.do you want to go to th who's books are these on the desk 错在哪里? The twin brothers are playing with the balls. the twin brothers are doing t___ homework in the room the twin brothers are getting dressed.的同义句 the twin brothers Whose _____(Walkman)are these?Are they the ______(twin)?