问题
选择题
_____ is no doubt _____ he will be successful someday. 
A．There; whether
B．There; that
C．It; whether
D．It; that
答案
答案：B
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_____ is no doubt _____ he will be successful someday.
A．There; whether
B．There; that
C．It; whether
D．It; that
答案：B