Question

-- The math problem _________ is not difficult.
--- But after several tries , I have to give up _________ on it .

A．it’s , working

B．itself , to work

C．itself , working

D．its , to work

Answer 1

C

試題分析：根據(jù)題干，本句的意思是”這道數(shù)學(xué)題本身并不難。“第一個空是做the math problem的同位語，故應(yīng)該用itself，表示本身。Give up doing”放棄做某事“，是固定短語。所以本題選C。
點評：做本題時應(yīng)該注意詞的位置，以此來確定是否用同位語；還應(yīng)注意固定短語的用法。