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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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倒装结构，正常的语序（虽然ron说不要串改题目），Several educational research groups are denouncing the mayor's proposal that if the test scores show that their students mastery of reading skills has improved, indiviual teachers would be given raises or bonuses by a system.
A&B it没有指代，绝对错误
C&D 主句没有谓语动词，绝对错误。
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