she is going to hainan for holiday.what about you?

she is going to hainan for holiday.what about you?
I don't know.But I decide ___ at home
1 on stay 2 on staying 3 to stay 4,at stayig
why?
2.i'd like to book rooms同义句
i'd like to ____ _____ _____ reservation
3.there is no bathroom or air conditioning in the hotel.I don't like it(合并成一个句子）
I don't like the hotel ______ bathroom________ or air conditioning
选择题的第四个选项 at staying