Question

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

Answer 1

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。