_____the signs mean different things?are,was,were,do,does,did(选一个填空）

_____the signs mean different things?are,was,were,do,does,did(选一个填空） What does these public signs mean? What do the signs mean?回答应该是? 将different things different mean signs 联词成句 what does these public signs mean有什么错 mean the what do signs 怎么组成问句 What does the signs mean.这句话哪错了 The signs mean the same thing.怎么改为一般疑问句? what ______ the signs mean?______mean“Keep off the grass”. signs different mean these things连词成句 连词成句：things　,signs ,different ,these ,mean [.] what do the signs mean (同义句转换) what are the （ ）（ ）the signs? look,there different public signs----------.1,mean different things.mean为什么不加S? This signs on the wall ----(mean) you must obey them. 还是动词mean 吧? To play the game, we have to know what these signs mean?转换同意句To play the game, we have to know what these signs mean?改为同义句( ) ( ) you have to know what these signs mean? what do the signs——（mean）?the sign on the wall——（mean）“danger” What does the signs mean? 改错只能改does 、signs、mean三处中的一处. 是把does改成do吗? the是代表后面的是单数吗?那是把signs改成sign吗? 求解! What do the signs mean?Where do you see them?的中文是?