问题补充:
Here number of people. number of themfifty.
A. are, a; The, is
B. is ,the; A, are
C. is, a; The are
D. are, the; A, is
答案:
(答案→)A. are, a; The, is
B. is ,the; A, are
C. is, a; The are
D. are, the; A, is
解析:句意:这儿有很多人,他们的数量是50。a number of 许多,后跟可数名词复数;the number of ……的数量,只是一个数字,所以用单数,故选A。