there. is. a. piano改成一般疑问句。

there is a piano in the classroom(改为一般疑问句并作否定回答there are some students in the library
there is a piano in the classroom(改为一般疑问句并作否定回答〕there are some students in the library〔改为否定句〕there are —four— basketballs in the box〔对划线部分提问〉

第1个回答  2019-05-29
补充一楼第一题!
1.Is there a piano in the classroom?
No,there isn't.
2.There aren't any students in the library.
3.How many basketballs are there in the box?
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