We should do these things(否定句)

We should do these things(否定句) See these ,what should we do?这句话对吗? We don"t know what we should do next don't worry.we are thinking about （）Awhat should we do nextBif we should do thatC that we should doDhow should we do that We must do something to protect our environment.We should use these bags（ ） plastic bags. 横线处应该填什么?We should do something to save these endangered birds=We should _____ _____to save these endangered birds. 横线处应该填什么?We should do something to save these endangered birds = We should _____ _____to save these endangered birds. we should do our best to prevent these rivers from _____(pollute)我不会, I don't know_______ to help him. A. how should we do B. what we should do C. what should we do Suppose we can't get the necessary equipment,what should we do? we didn't know what we should do next.(改为同义句）we didn't know()()next两空 We don't know what we should do next.改为同意句.We don't know___next.怎么翻译 We didn't know what we should do next.We didn't know what __ __ next You should do more of these. 是we all should do 还是we should all do what should we do today why should we do exercise? should we all do that?