改为复数：look!there is a man and a woman in the picture, what are the boy and girl doing?
the girl is crying and the boy is piaying cards .the boy is a child and the girl is a child,too
改为复数：look！there is a man and a woman in the picture， what are the boy and girl doing？ the girl is crying and the boy is piaying cards .the boy is a child and the girl is a child,too