按要求改写下列句子。
1. My favourites subject is science. ( 就画线部分提问)
_____ _____ your favourite subject?
2. They go home twice a year. ( 就画线部分提问)
_____ _____ do they go home?
3. Peter does his homework every day. ( 改为否定句)
Peter_____ _____ his homework every day.
4. Tom is waiting for a bus. ( 改为一般疑问句)
_____ Tom _____ for a bus?
5. Close the door, please. ( 改为否定句)
_____ _____ the door, please.
