Forthesakeofyourhealth,youshouldgive up smoking
单项选择题 For the sake of your health, you should give up smoking（）．
A.for sure
B.for all
C.for good
D.for long
正确答案：C
答案解析:for sure意为“的确”；for all意为“虽然”；for long=for a long time；for good=forever。因此选C。
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相关知识：第二章、语法与词汇
