按要求变换下列句型。
1. They have ever been to an English-speaking country. (一般疑问句)
______________ they ever ______________ to an English-speaking country .
2. She has been a flight attendant for two years. (对划线部分提问)
_______________________ she ________________ a flight attendant.
3. His father has been to America twice. (对划线部分提问)
_______________________ has his father __________________ to America?
4. Linda is taller than any other girl in her class. ( 同义句)
Linda is __________________________ girl in her class.
5. improve , why , you , do , English , want , to , your (连词成句)
______________________________________________________________?