21．Tom is a determined person．He never allows ______ to lead him by the nose．
A．anyone B．everyone C．nobody D．somebody
22．—Hi, Lily．Don't forget to watch I'm a Singer at 10:00 this Friday night!
—What a pity! I ______ in a plane to Hainan for a meeting then．
A．will sit B．will be sitting C．am sitting D．sit
