Eric joined an interesting camp last summer vacation. It was a lot of fun! The teachers there told many interesting math stories and the kids laughed a lot. They also asked many questions and finished the worksheets together. In the camp, they got up early and rode bikes before the math classes. After the math classes, they played basketball, talked to each other in English and made dinner together.   Eric misses the camp very much because he met a good friend, Cindy, there. When Cindy missed her home, he took care of her. When Eric missed his parents, Cindy cheered him up.  The camp was over one year ago, but they still write letters to each other. It was a really wonderful camp!
【題組】9. ( ) What camp did Eric join last summer?
(A) A math camp.
(B) A bicycle camp.
(C) An English camp.
(D) A basketball camp.