1.She doesn't even know what electricity is.（改为一般疑问句）
-> Does she even know what electricity is?
2.We can buy sweets in packets.(就 in packets部分提问）
-> Which sweets can you buy?
3.I can tell you what it looks like.（改为一般疑问句）
-> Can you tell me what it looks like?
4.Electricity is much more dangerous than water.(改为同义句）
-> Water is much less dangerous than electricity.
5.He is short of money.(改为同义句)
-> He has little money.
6.Cables are connected to a power station(就a power station部分提问）
-> Where are cables connected to?
7.Benny said politely,"May I have my packet of electricity?".(改为同义句）
-> Benny said politely whether she might have her packet of electricity.
8.You must always be careful with it.(改为同义句）
-> You must always take good care of it.
9.Can you think of an example?.(改为同义句）
-> Can you come up with an example?
10.I've tricked Benny at last..(改为同义句）
-> I've cheated Benny finally.