“We mustn't buy things we DON'T need.”这个句子是什么从句?

英语翻译We mustn't buy _____ _____ _____ fur. “We mustn't buy things we DON'T need.”这个句子是什么从句? we mustn't do that again 情态动词must与need可能互换吗?新概念第二册41课,我觉得need与must可以互换,换了意思一样,我列出来：1,you needn't (或mustn't) be so rude about it2,We mustn't (或needn't) buy things we don't need.3,You needn't (或mustn 情态动词must与need可能互换吗?新概念第二册41课,我觉得need与must可以互换,换了意思一样,我列出来：1,you needn't (或mustn't) be so rude about it2,We mustn't (或needn't) buy things we don't need.3,You needn't (或mustn What we need is___the animals.We mustn't wast time. We mustn't buy things we____ A.needn't B.need not C.don't need D.haven't need 这句话为什么不选A选C,区别是什么,为什么A是错的. We mustn't buy things we____ A.needn't B.need not C.don't need D.haven't need 这句话为什么不选A选C,区别是什么,为什么A是错的 we什么work hard用must或mustn‘t填 At home,we mustn't cook food w_______ adults. The sign No smoking means we mustn't smoke here we mustn't play in the kitchen 翻译意思 What mustn't we do there?翻译成中文 we mustn't cut down forests.(改为祈使句） we mustn't arrive late for class 同义句 we mustn't cook without an adult 同义句转换 we mustn't put clothes on lamps or heaters 翻译 We mustn‘t throw( )awayA.its B.them C.they