单选题 Why couldn't Todd and June find out who sent them the tickets? [A] Their friends wanted to keep it a secret. [B] The letter with the tickets was not signed. [C] There was no letter with the tickets.

【正确答案】 C

【答案解析】[解析] 题目在问为什么托德和朱恩没有找㈩是谁给他们送的票。根据短文第二段最后一句话“There was no letter in the envelope with the tickets”意思是“放票的信封里没有信”，可以推断答案[C]为正确答案。