问题描述：
________ you decide to take up,you should try to make it a success.语法
________ you decide to take up,youshould try to make it a success.
A) If only
B) Unless
C) Whatever
D) Whenever（C）
________ you decide to take up,youshould try to make it a success.
A) If only
B) Unless
C) Whatever
D) Whenever（C）
问题解答：
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