This pair of trousers____too long for me.

问题描述:

This pair of trousers____too long for me.
A are
B were
C is
D was
选哪个 为什么

已经有正确答案了,我强调一下.主语是pair,谓语应该用单数,主语如果是trousers,谓语就得用复数.
选C