帮忙一下~英语连词成句~谢谢

That will be the only thing to do now.
翻译是:那是现在唯一能做的事

宾语，状语，补足语，表语你去看看语法书吧……那上面比我讲得清楚…………

Now,the only thing that will do to be...
Now,the only thing that will be done...

这个没办法连成完整的句子。

That will be the only thing to do now.翻译是:那是现在唯一能做的事.