答案：B

题目分析：考查固定词组，A. set up建立B. got up起来C. put up举起D. came up矫揉造作，句子意思“我将要走到汤姆的座位当他起来离开的时候”

点评：本题考查了up组成的动词短语的辨析，英语中有的词组是不同的动词搭配相同的副词或介词构成的。含义不一样，注意区分

即学即练：It can be easy to _______ such bad habits as smoking and heavy drinking, but it is not so easy to quit.

A. slide into      B. turn into     C. put into    D. draft into

选A