There is something on the floorPlease( )A pick it upB pick them up

问题描述:

There is something on the floor
Please( )
A pick it up
B pick them up

a

A

选A
因为something是不定代词
it充当了这个成分
而them就有所特指
还有一点就是
假如地上就只有1个东西
显然排除them
因此从这个角度看them也不能选