演出到此结束，感谢你们。
________today’s show, thank you.
She wasn’t sure where she can spend her holiday in summer. (改为同义句)
She wasn’t sure________spend her holiday in summer.
I bought the cell phone last week. (改为同义句)
I________ the cell phone since last week.
Jason has been in Nanjing since 5 years ago. (改为同义句)
Jason has been in Nanjing________.
We improved the situation by stopping factories from putting waste into the rivers. (对画线部分提问)
________did you________the situation?
Tom has finished his homework. (改为一般疑问句)
________Tom________his homework?
