221.-------- not to miss the flight at 15:20,the manager

B. Reminded
这是非谓语的省略,原句为(The manage was ) reminded not to miss the flight at 15:20.
The manage set out for the airport in a hurry.
合并成一句就是答案了
不过这个结构要注意,两句句子的主语必须一致,不然就要牵扯到语法独立主格结构了
如The meeting being over, all of us went home. 开完会后我们都回家了.
两句句子主语不同,就不可省略