Rewrite

1. His house is more comforyable than my house 
-> My house is 
2. My son is 5 year old now .He cannot go to Kim Dong Primary School 
-> My son is not 
3. Learning English is necessary for everyone 
-> It is 
4 . I think you should go to work today 
-> You'd better 
5. The weather was bad .They still went for a picnic 
-> Though