there is some rubbish on the grounp.Please __A pick them up B pick up themCpick it upDpick up it

there is some rubbish on the grounp.Please __A pick them up B pick up themCpick it upDpick up it
there is some rubbish on the grounp.Please __A pick them up B pick up themCpick it upDpick up it

there is some rubbish on the grounp.Please __A pick them up B pick up themCpick it upDpick up it
C something 看做第三人称单数,用it代替 C 地上有东西,请把它捡起来.

A pick it up
pick up 把。。。捡起来
名词可以放在pick up中间或后面
但代词如it these them等要放在中间
这类的表达有好多
put the smoke out 把烟熄掉
turn it off 把它关了
switch on the power 把电源打开

选D
rubbish 是不可数名词，只能用代词it 。另外代词it 只能放在动词短语中间，所以选C.
希望可以帮到你。

A
前边是some