English teachers are supposed ______their students a test in class, even after class, ______better teaching results.
A．to give; ensuringB．giving; to ensure
C．to give; to ensureD．giving; ensuring
C

試題分析：考查不定式的用法：第一空填不定式，be supposed to do應(yīng)該做…,第二空填不定式，是做目的狀語(yǔ)，句意：為了確保教學(xué)效果，英語(yǔ)老師應(yīng)該在課堂給學(xué)生進(jìn)行測(cè)驗(yàn)，甚至在下課的時(shí)候。選C。
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