What's on the desk?There is ___pencil on it?
问题描述:
What's on the desk?There is ___pencil on it?
为什么填a
答
因为pencil是个可数名词,如果你这个搞不清楚,可以看be动词,is修饰单数的,而are修饰复数的,而这里是is,所以填a.