问题
选择题
_____ hard you may try, you can't possibly persuade Tom to give up smoking, for he is so addicted to it.[ ]
A. Whatever
B. However
C. Whichever
D. Whenever
答案
答案：B
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_____ hard you may try, you can't possibly persuade Tom to give up smoking, for he is so addicted to it.[ ]
A. Whatever
B. However
C. Whichever
D. Whenever
答案：B