Review the following sentences as required（根据所给要求，改写下列句子。每空格限填一词）：（共12分）
Uncle Li used to go fishing in a small pond. (改为否定句)
Uncle Li _________ _________to go fishing in a small pond.
The government has made some plans to improve our world. (改为被动语态)
Some plans _________ _________made to improve our world by the government. 
His mother cooked very delicious dishes for us. (改感叹句)
_________ _________dishes his mother cooked for us!
Grandma will finish the sweater in three days. (对划线部分提问)
_________ _________will Grandma finish the sweater?
The water is polluted so seriously that we can’t drink it. (保持句意不变)
The water is polluted _________seriously for us _________drink.
Could you tell me how I should take the medicine?（改简单句）
Could you tell me _________ _________take the medicine?