i believe he will do everying he can to help you

i believe he will do everying he can to help you i believe he--------- do everying he --------to help you 横线处 Ask him to do what he can _____ us,will you.(help)填什么 Ask him to do what he can ___________( help) us,will you? 英语翻译he will do everything_____ his _____ to help you. i will do what we can to help you I will do what I can to help you .为什么是to help. I will do what I can to help you .what I can 作什么成分啊 He said ( )(polite),“Can I help you?” I'm () he can help you -------he can help you. You can depend on it that he will help you.