his brothers.A. This isB. That’sC. These areD. That’s isn’t

问题补充：

his brothers.

A. This is

B. That’s

C. These are

D. That’s isn’t

答案：

A. This is

B. That’s

(答案→)C. These are

D. That’s isn’t

解析：根据下文his brothers.他的兄弟们，可知本句主谓语是复数形式，故选C。