—Don’t litter the ground, boy. Look at the sign, “Rubbish must be thrown into the dustbin.

—Don’t litter the ground, boy. Look at the sign, “Rubbish must be thrown into the dustbin.”
—Sorry, I’ll right now.
A. pick it up
B. put it up
C. pick up it
D. put up it

(答案→)A. pick it up B. put it up C. pick up it D. put up it解析：句意：不要乱丢东西,孩子。看这个标志,“垃圾必须扔进垃圾箱。”对不起,我马上捡起来。Pick up捡起；put up张贴，挂起。两个都是由动词加副词构成的短语，代词宾语必须放在两词之间。所以选A。

谢谢解答