Each time invited to a dinner she always refuses she has to take care of her baby.A. to

问题补充：

Each time invited to a dinner,she always refuses, she has to take care of her baby.

A. to say

B. saying

C. says

D. having said

答案：

A. to say

(答案→)B. saying

C. says

D. having said

解析：考查非谓语动词。根据句意，主语she与say之间构成主谓关系，表示伴随的动作，所以用现在分词。