listen,the birds are singing ( )the spring.A,welcome B,welcomes C,to welcome D,to welcomes

Listen!The birds are singing （beautiful）in the woods Listen!Many birds are singing()the tree 填什么介词 listen,the birds are singing ( )the spring.A,welcome B,welcomes C,to welcome D,to welcomes are the birds in the Listen!There are some birds ____ in the tree.(用sing的适当形式填空)怎么填 Where are the birds中文 listen some birds are singing in the tree还有这句the soldiers are the greatest heres they saved lots of people in the big earthquake是什么意思? 适当形式填空 Listen,the birds in the tree (sing) Listen,the birds ________________ (sing) in the tree listen!the voice ----(sound)like the singing of birds There are some birds s___in the tree. there are many birds in the sky There are some birds singing( )the trees there are three birds in the (The sun is shining,birds are singing. what are the smallest birds on earth 连词成句：the flying are birds We are enjoying the birds( ).(sing)