答案：D

题目分析：考查谓语单复数，主语是teachers，所以用are，因为句子中有短语as well as，要遵守临远原则，主语是Every student，所以是is，所以选D

点评：考查谓语单复数是常考内容，要求学生做此类题时，首先知道主语是单数还是复数，由主语单复数来确定谓语的单复数

即学即练：There ______ quantities of apples in the basket and there was ______ milk in the bucket.

A. were; a number of         B. was; quantities of

C. were; a quantity of         D. was; a good many

选C     句子意思“篮子里有许多苹果，桶里有大量的牛奶”