问题 更新时间2023/4/3 12:59:00 The zoo keeper is worried because the number of visitors _____ smaller and smaller. A.becomeB.becameC.is becomingD.have become 答案 登录 注册 参考答案:C 出自:联大 >> 河南理工大学-采矿工程-专升本英语1