The professor some of his assistants to attend our discussion this afternoon.A. and; i

问题补充：

The professor, some of his assistants, to attend our discussion this afternoon.

A. and; is

B. as well as; is

C. or; are

D. except for; are

答案：

A. and; is

(答案→)B. as well as; is

C. or; are

D. except for; are

解析：考查连词及主谓一致。A项谓语动词用are，as well as也，以及，连接两个主语谓语动词与前一个保持一致，故选B。