The Olympics Committee_____________ at variance in their opinion

The Olympics Committee_____________ at variance in their opinions as to which country was to host the next Olympic Games.
A、 were
B、 was
C、 is
D、 are
【正确答案】：A
【题目解析】：该题考查的是主谓一致。根据后面的was可判断应为过去时，句子的意思是奥委会的成员对于在哪个国家举行奥运会意见不一致，因此主语应为复数表示委员会的所有成员，因此用复数谓语were。