In your class you should allow students to voice their opinions they are different from

问题补充：

In your class, you should allow students to voice their opinions, they are different from your own.

A. until

B. unless

C. even if

D. as though

答案：

A. until

B. unless

(答案→)C. even if

D. as though

解析：连词辨析。A直到…才；B除非;如果…不；C即使；D似乎；好像；句意：在你们班里，你应该让所有的学生都发表他们的观点，即使他们的观点和你的观点不一样。故C正确。