问题
选择题
_____ worries the doctor most was _______ they could find the cause of the disease.[ ]
A. What; how
B. That; that
C. What; that
D. How; what
答案
答案：A
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_____ worries the doctor most was _______ they could find the cause of the disease.[ ]
A. What; how
B. That; that
C. What; that
D. How; what
答案：A