七年级a、an 练习题一、选择正确的答案1.I am _(a, an)student. 2.There is _(a, an) elephant in the zoo.3.You are _(a, an) good boy. 4.I have _(a, an) orange.5.Math is _( a, an )useful subject.6.This is _(a ,an)new book.7.Please take _(a, an )umbrella.10.There is _(a,an) orange on the table.13.I have _orange ._orange is very sour.( a, an ,the)14.My father is _(a, an, )man.16.Theres _(a, an, the )apple on the table.17._(A,An,The) blackboard i
