Unit 3 练习
Ⅰ. 请根据各题后括号内的要求改写下列句子,每空一词(含缩写)。
1. They have already visited the museum.     (改为一般疑问句并作否定回答)
— ___________ they  ____________ the museum? 
—No, _________________ .
2. Li Qiang’s father has gone to Shenzhen on business.(对划线部分提问)
 _______________ Li Qiang’s father _______________on business? 
3. Sally went to Dalian yesterday. She isn’t back now.(改为同义句)
Sally _____________________________ Dalian.
4. How much is this car?	(同上)
 _____________ the _______________________ this car? 
5. Ther