句型转换。根据下列题目要求改写句式。(每空0.5分，共5分。)
There is some water in the bottle.(改为否定句)
There ________ _________ milk in the bottle.
We often take the subway to the park.(改为同义句)
We often go to the park ________  ________?
She often plays the guitar on Sundays.(用at the moment替换on Sundays.)
She ________ _________ the guitar at the moment.
He goes to the library twice a week.(对划线部分提问)
__________ _________ does he go to the library?
It’s Sunday today.(对划线部分提问)
________  __________ is it today?