英语书写练习一本通外研版。四年级下册听力资料 1、--___ are the birds doing?--They are singing in a tree. [单选题] * A. Who B. What(正确答案) C. How D. Where 2、Your father is very busy, so he ___ play football with you this afternoon.()[单选题] * A. doesn’t B. don...