__ onthe desk ?There are some glasses. A WhatB Where C What's

问题描述:

__ onthe desk ?There are some glasses. A WhatB Where C What's
选哪个,C是单数,可是后面的回答是复数形式
whyselect C ?

后面的回答是there be句型即“有……”的意思.be的单复数是由后面接的名词的单复数来决定的.A则缺少谓语.