"I'm going to participate in a volunteer program t...

Câu hỏi: "I'm going to participate in a volunteer program this summer," said Martha.

A. Martha said that she was going to participate in a volunteer program that summer.

B. Martha said that I was going to participate in a volunteer program this summer.

C. Martha said that I am going to participate in a volunteer program this summer. 

D. Martha said that she is going to participate in a volunteer program that summer.