英语选择题Liu Ying,__this pair of glasses yours? No,My glasses__on the desk.

题目

英语选择题Liu Ying,__this pair of glasses yours? No,My glasses__on the desk.
A. is is B. is are C. are is D. are are 选哪个,为什么?麻烦给出详细的解释.谢谢!

答案

B
this pair of glasses 所跟动词应根据this pair来定,this pair相当于主语的作用,后面应该为is；而后一句glasses为主语,应该用are