look the young pioneers are singing and dancing ___

look the young pioneers are singing and dancing ___ Where the Young Pioneers are singing now?改错句 they are ()() the young pioneers The gilrs are singing and dancing.They look ——（happy）.用happy Her ___(爱好）are singing and dancing. ______ of the students are Young Pioneers. There are ________people dancing and singing in the park on How ________(excite) the children are singing and dancing! a g________of grils are singing and dancing in the park They are singing and dancing ________(happy)on the playgonun The girls are singing and dancing happily 是什么结构 They are ----(crazy)about dancing and singing.