（）you decide to take up, you should do your best to make it a success.
A、
Whatever
B、
If only
C、
Whenever
D、
Unless
【正确答案】：A
【题目解析】：
无论你决定从事什么，你都应该尽最大努力使之成功。Whatever无论什么，符合句意。
（）you decide to take up, you should do your best to make it a success.
（）you decide to take up, you should do your best to make it a success.
Whatever
If only
Whenever
Unless
无论你决定从事什么，你都应该尽最大努力使之成功。Whatever无论什么，符合句意。