问题描述：
---- It took me nearly 5 years to make a breakthrough in my field.
---- Well,you know what people say._________.
A.There is no smoke without fire.
B.Practice makes perfect.
C.All roads lead to Rome.
D.No pains,no gains.
---- Well,you know what people say._________.
A.There is no smoke without fire.
B.Practice makes perfect.
C.All roads lead to Rome.
D.No pains,no gains.
问题解答：
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