填空：I think I (stay) at home.If you do,you will feel boring.填

填空：I think I (stay) at home.If you do,you will feel boring.填stay的适当形式,因为后面是“If you do",所以我觉得不能填will stay和am going to stay吧,那应该加情态动词吗?
是的，这是一个对话，第二句是答语。