Learning a language isn't easy. It takes time

问题补充：

单项选择题:

—Learning a language isn easy. It takes time.

—I agree.. Theres no shortcut.

A. All roads lead to Rome B. Rome wasn built in a day C. Practice makes perfect D. Slow but sure wins the race

答案：

答案：B

解析:All roads lead to Rome，“条条大路通罗马”。Rome wasn built in a day“冰冻三尺非一日之寒”。Practice makes perfect，“熟能生巧”。根据句意应该选B。