--How can I make progress in my study，Sir？--_______ an effective learner，you sho

题干

--How can I make progress in my study，Sir？
--_______ an effective learner，you should find some good approaches．

A．Being	B．Having been
C．To have been	D．To be

上一题下一题 0.4难度单项选择更新时间:2014-09-15 04:02:11

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