问题补充:
No one this building without the permission of the police .
A is leaving B is to leave C has left D will be leaving
答案:
解析:考察be to do 用法。Be to do用于否定句,表示“禁止”,相当于mustn’t。结合句意可知B正确。句意:没有警察的允许,任何人都不得离开大楼。
时间:2021-04-24 04:06:08
No one this building without the permission of the police .
A is leaving B is to leave C has left D will be leaving
解析:考察be to do 用法。Be to do用于否定句,表示“禁止”,相当于mustn’t。结合句意可知B正确。句意:没有警察的允许,任何人都不得离开大楼。