请帮忙用if（是否）和that造句,要求是宾语从句.
问题描述：
请帮忙用if（是否）和that造句,要求是宾语从句.
答
If tomorrow will be rainy that I will not go to Beijing.
答
I don't know if she will come tomorrow.
It's know to all that she have a boyfriend.