1.Smoking ( )(forbid) in public places.
2.改为被动语态:The government forbade drinking two years ago.
3.He does well in class. He takes part in many activities in his spare time.(用not only.....but also连接)
4.It rains.I go to the park (用if讲两句连成一句合乎逻辑的话)
5.It has been raining hard since yesterday morning. (改为一般疑问句,并作否定回答)
6.He has rung me up four times . He began to ring me at 11 o'clock.(用since合并句子)