He had promised to come and help us and .A. so did heB. so he didC. so had heD. so he had

问题补充：

He had promised to come and help us, and .

A. so did he

B. so he did

C. so had he

D. so he had

答案：

A. so did he

(答案→)B. so he did

C. so had he

D. so he had

解析：可联系答.案.网客服索取。