单选题 Which of the following is true? [A] All tile suggestions were helpful. [B] I tried all the ways that the people suggested. [C] Some of the suggestions were very bad.
【正确答案】 C
【答案解析】[解析] 根据第八句，作者把“helpful”加了引号，说明并不是所有的建议都很有帮助。