问题描述：
倒装句Only
Only by practising a few hours every day ____ be able to master a the language .
A.you can
B.will you
C.can you
D.you will
为什么不可以选C呢,can 表能力啊
Only by practising a few hours every day ____ be able to master a the language .
A.you can
B.will you
C.can you
D.you will
为什么不可以选C呢,can 表能力啊
问题解答：
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