Please throw away your empty bottles. (改为否定句)
________  ________ away your empty bottles, please.
Let’s go to the forest park and have a barbecue. (改为反意疑问句)
Let’s go to the forest park and have a barbecue, ________  ________?
The team members will come back from Beijing in three days. (对划线部分提问)
________  ________will the team members come back from Beijing?
Mr. Green came into the room. He held a cup of tea in his hand. (合并为一句)
Mr. Green ________ the room ________ a cup of tea in his hand.
Dolphins are so clever that they can follow the instructions. (保持原句意思)
Dolphins are ________  ________ to follow the instructions.
Our teachers always tell us to keep the environment clean.  (改为被动语态）
We ________ always ________ to keep the environment clean by our teachers.
old, the, to, cleaning, had, all, woman, the, do, herself.  (连词成句)
________________________________________________.