seat和sit的区别 Please remain ____until the plane has come to a complete stop.答案是seated.____himself by a table,the gentleman asked the waiter for a cup of tea politely.答案是seating为什么第一个填seated第二个填seating?

问题描述:

seat和sit的区别 Please remain ____until the plane has come to a complete stop.答案是seated.
____himself by a table,the gentleman asked the waiter for a cup of tea politely.答案是seating
为什么第一个填seated第二个填seating?