English teachers are supposed their students a test in class even after class better te

问题补充：

English teachers are supposed their students a test in class, even after class, better teaching results.

A. to give; ensuring

B. giving; to ensure

C. to give; to ensure

D. giving; ensuring

答案：

A. to give; ensuring

B. giving; to ensure

(答案→)C. to give; to ensure

D. giving; ensuring

解析：考查不定式的用法：第一空填不定式，be supposed to do应该做…,第二空填不定式，是做目的状语，句意：为了确保教学效果，英语老师应该在课堂给学生进行测验，甚至在下课的时候。选C。