If I ten years younger, I very happy.
A. am, would be
B. am, shall be
C. were, shall be
D. were, would be
网友回答
A. am, would be
B. am, shall be
C. were, shall be
(答案→)D. were, would be
解析：句意：如果我再年轻十岁，我会很高兴的。这里是对现在的虚拟，从句用过去式，主句也是对现在的虚拟，所以用would+动词原形，故选D。