单选题 We have to ask them to quit talking in order that all people present could hear us clearly.
【正确答案】 B
【答案解析】[解析] 本句意思：我们不得不要求他们停止说话以让在场的所有人能听清我们的话。quit意为“停止”，与cease(停止)意思相近。decrease减少；continue继续；keep保持。