全册重点词汇与句型复习 — 英语选择题

学校集市（school fair）上，Amy 卖文具。她有 20 支蜡笔（crayons）和 15 支钢笔（pens）。下面哪句话是正确的？A. I have twenty crayons and fifteen pens. B. I have twenty crayon and fifteen pen. C. I have twenty crayon and fifteen pens. D. I have a crayon and fifteen pens.