the number of books is 20,为什么不是are
the number of books is 20,为什么不是are
the number of books is 20.book不是可数名词吗,为什么用is不用are
a series of books后面为什么接is a number of books 后面为什么接are,
what —is—the number of them?为什么横线填is 不是 are?
There are a number of books in our library,the number of boo
the number of students后是加is\are
the number of the workers here is about 50.句中为什么用is而不是are?
I’m sorry,a number of books A.is lost B.is missing C.are mis
There _____ (is/are )a box of rubbers near the books.为什么?
the number of students 后 应该+are还是is
简单英语语法提问1.the number of the books in our library is larger t
英语翻译the number of people who read newspapers or books is dec