–You’re coughing badly, Martin. Why not give up smoking?--Give up smoking? Easier said tha

–You’re coughing badly, Martin. Why not give up smoking?
--Give up smoking? Easier said than done, Amy. Once you the habit of smoking, it is very had for you to .
A. keep up; break it away
B. take up; drop it out
C. pick up; get rid of it
D. build up; do away with it

A. keep up; break it away B. take up; drop it out (答案→)C. pick up; get rid of it D. build up; do away with it解析：本题考查动词短语辨析。句意是：“--马丁，你咳嗽得很厉害，为什么不戒烟呢？”“--戒烟？说起来容易做起来难，艾米。你一旦养成了这个习惯，就很难戒掉。”pick up在此句中表示“养成；形成”；keep up表示“保持”；take up表示“从事”；build up表示“发展，增大”；break away表示“脱离”；drop out表示“退出”；get rid of表示“摆脱，除去”；do away with表示“摆脱；废除，取消”。

我明天再问问老师，叫他解释下这个问题