用简单的英语解释下列句子：（带括号的）
1.How did the thief (go into) the house?
2.He says that he (isn't) young (any longer)
3.Please (take) your bag (away from) the seat.
4.(Why don't you) go to the cinema tonight
5.The boy was (so) excited (that) he couldn't fall asleep
是用同义句转换列，如第四个：Why not go to the cinema tonight