Many a school in the United States _____ to train men in theolog

Many a school in the United States _____ to train men in theology.
A、was set up
B、were set up
C、has set up
D、have set up
【正确答案】：A
【题目解析】：many a是固定用法，后跟单数名词，与其对应的谓语也用单数。本句是被动句。