Question

(2007·宜昌中考题)The number of visitors invited to the exhibition ________ 50. But a number of uninvited visitors ________ come to it.

1. A.
   were; had
2. B.
   was; had
3. C.
   were; has
4. D.
   was; has

Answer 1

D
解析：本题考查a number of和the number of作主语时的区别。a number of+n.作主语时，中心词是名词，谓语动词和名词的数一致；the number of+n.作主语时，number是主语，谓语动词与number的数一致。因此本题D为正确答案。