问题
选择题
Keep on trying, ______you’ll succeed ___________
A．and; on time
B．or; at one time
C．and; in time
D．or; all the time
答案
C
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Keep on trying, ______you’ll succeed ___________
A．and; on time
B．or; at one time
C．and; in time
D．or; all the time
C