It is required that students _____mobile phones at school, so seldom _____them using one.
A．don’t use; will you seeB．should not use; you will see
C．not use; will you seeD．can’t use; will you see
C

第一空填not use是虛擬語氣的用法：句型It‘s required that從句中用（should）+動(dòng)詞原形，第二空是倒裝句的用法，seldom“很少”置于句首時(shí)，句子用部分倒裝，will放在主語前面。選C。
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