____ all the inventions have in common is ____ they have succeeded.
A. That; what
B. What; that
C. That; that
D. What; what
A. That; what
B. What; that
C. That; that
D. What; what
【答案】
A. That; what
B. What; that
C. That; that
D. What; what
A. That; what
B. What; that
C. That; that
D. What; what
【答案】
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