皮皮学，免费搜题
登录
搜题
【单选题】
There _____ a lot of coal mines in the south, but many of them have been closed or are _____ be closed.A.
use to having; about to
B.
used to be; to
C.
use to having; going to
D.
used to be; supposed to
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
相关题目：