题目

----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 hard 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 答案：C

查看本题答案和解析