1）
____ a meal for about 50 guest, start by calculating how much food you want to prepare per guest.
答案是To prepare 而我選了preparing
，想請教一下，這不是分詞構句的概念嗎？還有，可以把To prepare這句移到per guest 後面嗎？
2）___ of the employees who prefer to travel by train will not be able to arrive in time for the opening ceremony.
答案是Most，而我選了One（我也考慮國most....）
One 解釋起來也通啊～
感謝大家指教～