Is it he or you in charge of the job and supposed to complete it on time?.A. who isB. tha

问题补充：

Is it he or you in charge of the job and supposed to complete it on time?.

A. who is

B. that is

C. who are

D. whom are

答案：

A. who is

B. that is

(答案→)C. who are

D. whom are

解析：考查强调句和主谓一致：句意：是你还是他负责这个工作，应该准时完成这个工作？这是强调句的一般问句，因为是强调的是人，用that和who都可以，由or连接的两个以上主语时，动词和最接近的主语一致，由此可以排除A和B；whom引导定语从句时在从句中作宾语，所以排除D。选C。