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题库 / Prep2007E2-SC-72
Several educational research groups are denouncing the mayor's proposal of a system by which individual teachers would be given raises or bonuses should it be that test scores show their students' mastery of reading skills having improved over a nine-month period.
should it be that test scores show their students' mastery of reading skills having
should it be that test scores show their students' mastery of reading skills have
should test scores showing their students' mastery of reading skills has
if test scores showing their students' mastery of reading skills having
if test scores show that their students' mastery of reading skills has
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这里E是单纯的条件状语从句，满足主将从现的原则，至于为什么前面是would，我认为这里是用了would的情态动词形式，语气偏弱一点
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