句型转换。1. Did you have a good trip? (肯定，否定回答)
Yes, ______________________.
No,______________________.
2. He wants to learn English. (变一般疑问句)
______________________learn English?
3. It's 6: 00. (对划线部分提问)
_____________________________________________________?
4. These are our suitcases. (变单数)
_____________________________________________________.1. I did, I didn't (答案不唯一)
2. Does he want to
3. What time is it
4. This is my suitcase