A number of people _____at the street corner.a.be b.Is c.am d.are
问题描述：
A number of people _____at the street corner.a.be b.Is c.am d.are
答
b。 is
a number of people is at the street corner。
在字典上看到的例句：
A number of books is missing from library。
答
D A number of people后接谓语复数