there is a bike under the tree.(改为复数形式)there___some___under the tree.
there are some books on the desk.(改为否定句)____ ________books in the desk
are there any bags on the desk?(否定回答)____,____ ______
there is some milk in the glass.(对some提问)________milk ________in the glass?
there is a computer in the room.?(改为一般疑问句)________ a comouter in the room