填空:Listen!Many()are singing in the tree.

填空:Listen!Many()are singing in the tree. Listen!Many birds are singing()the tree 填什么介词 listen some birds are singing in the tree Listen,the bird_____(singing,is singing)in the tree. The birds are singing in the tree.对singing提问 Listen,the bird is singing in the tree.listen 为什么不用加ing? The birds (are singing) in the tree括号部分提问 brids,singing ,in ,are ,tree the,the 连词成句 Listen!The birds are singing （beautiful）in the woods Listen!There are some birds ____ in the tree.(用sing的适当形式填空)怎 some birds are singing in the tree.改为一般疑问句 "How many birds are in the tree?