单选题 It is no use asking the children to keep quiet. They can't help ______ noise.
【正确答案】 C
【答案解析】[解析] 本题考查固定表达。can't help doing sth．意为“情不自禁做某事”，相当于“can't help but do sth．"。根据句意“根本不可能让孩子们保持安静，他们会禁不住吵吵嚷嚷。”所以答案为C。