There is a bird sing in the treE. There is a bird to sing in the treE. There is a bird singing in the treE. There is a bird is singing in the treE.2.—What are you going to do?—Nothing much. Why?A. I’m busy. B. I’m OK. C. I’m right. D. I’m freE.3.With his aunt’s help, the little boy can go on with his study. A. Thanks to B. Under C. Thanks for D. Over4.Jack is having a day off. A. working a whole day B. having a rest C. away from work for a day D. having a meeting5.I am free on any day except weekend next week.A. Saturday or Sunday B. every dayC. Monday to Friday D. Monday or Friday