名词单复数的区分使用 — 英语选择题
题目
农场情境。小明看到一只鸭子，说："What's this?" 小红看到三头猪，说："What are these?" 请选出说法完全正确的一句：A. This is a duck. They are three pig. B. This is a duck. They are three pigs. C. These is a duck. They are three pigs. D. This is an duck. They are three pigs.