用what is提问，可以用there are来回答。

在there be结构中，be是谓语动词，are是be的一般现在时的复数形式，用what is提问时，既可以用thete is来回又可以用there are来回答。例句：

1. What is in the room There is a table in the room.2..What is on the playground There are many students on the playground.2.