----You’recoughingbadly,Martin.Whynotgiveupsmoking?---G...

問題詳情：

----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

【回答】

C

知識點：動詞時態與語態

題型：選擇題