Allpresent and all going on well.our monitor said. A. is; isB. are; areC. are; isD. is;

问题补充：

Allpresent and all going on well.our monitor said.

A. is; is

B. are; are

C. are; is

D. is; are

答案：

A. is; is

B. are; are

(答案→)C. are; is

D. is; are

解析：前面的all表示所有人，为复数，后面的all表示everything后面应该用is