问题
选择题
I can’t read these new words, so I have to __________ in the dictionary.
A．look it up
B．look up it
C．look them up
D．look up them
答案
答案：C
C 考查look up的用法。以动词和副词构成的短语，宾语是代词it/ that时，必须放在二者之间，排除B/ D。words是复数，故用them，选C。