succeed in doing anything .
A. Only by working hard we can
B. By only working hard we can
C. Only we can by working hard
D. Only by working hard can we
网友回答
A. Only by working hard we can
B. By only working hard we can
C. Only we can by working hard
(答案→)D. Only by working hard can we
解析：考查only的部分倒装句。Only的部分倒装要符合两个条件。only放在句首，且强调状语by working hard，使用部分倒装。句意：只有通过努力学习，我们才能获得成功。故D正确。