they draw a picture of ______?A.people B.a person 选哪个呢?选这2个都可以吗?为什么?

问题描述:

they draw a picture of ______?A.people B.a person 选哪个呢?选这2个都可以吗?为什么?

a person只能选这个
people前面需加冠词the