The number of people present at the meeting about 1000 a large number of whom experts f

问题补充：

The number of people present at the meeting about 1000, a large number of whom experts from abroad.

A. was; was

B. were; were

C. was; were

D. were; was

答案：

A. was; was

B. were; were

(答案→)C. was; were

D. were; was

解析：考查主谓一致。the number of……的数目，谓语动词用单数；a number of许多，谓语动词用复数，故选C。