the room is full of people.这里be full of 为什么要用is很多人不是应该用are吗?

the room is full of people.这里be full of 为什么要用is很多人不是应该用are吗? 当公交车上全是人时. When a bus is full of people. 为什么这里用is不用are The bus is full of people.There are no______(seat) the suppermarket is always full of people why is a room full of married people empty? Why is room full of married people em-pty this is the doctor's waiting room.lt's full of people.they a ___ of the glasses is full of milk;two of them are full of c The( )is full of apples The bath room is full of water.(改同义句) The room is full of smoke.中smoke的意思 Look,the reading-room ____readers.A full of B full with C is