The two brothers look so much alike that it is difficult to .
A. tell them from
B. tell from them
C. tell apart them
D. tell them apart
网友回答
A. tell them from
B. tell from them
C. tell apart them
(答案→)D. tell them apart
解析：考查词组take apart“区分”，tell sth from sth“区分…和…”，所以AB都少宾语，另外代词要在tell apart中间，选C。句意是：两兄弟看起来很象以至于很难区分他们。