we do know what makes that life worth living.中worth是什么用法?还有that能省略吗?

We don't know what to do. 改错What do children make paper planes,do you know? Little ------- about what he is doingA.do we know B.we do know C.did we know D.we know We don"t know what we should do next we don't know _____?A:what do we do B:what to do C:what do we to do D:what to do we do What we know is nothing; what we do not know is immense中文是什么意思? What we know is not much.What we do not know is immense. Do you know what we shall do改写同义句 Do you know what______ _______- What can we do to make a better world?回答 What do we can make him happy 的同义句? 改错we really don't know what will do next What do we know form the passage 翻译 We don't know what to do.(改为复合句) 英语翻译：unfortunately we know all too well what to do. We didn't know what we should do next.We didn't know what __ __ next 求助翻译what can i do!I haven't slept at all in days It's been so long since we've talked And I have been here many times I just don't know what I'm doing wrong What can I do to make you love me What can I do to make you care What can I say to ma 改错I listened carefully,but nothing heard.What will computers like in the future?We should make notes before write.He's a man of great knowledges.How do you know what should you do? We don't know what we shall do.同义句we don't know_ _do