what must people do before thry cross the street in China?

连词组句 do,better,people,we,what,make,must,to,sign,tell,had,a,they People usually use s_ to show what you must and mustn't do填什么?快 what must people do before thry cross the street in China? We must prevent people from _(pollute) the river.What _ they _(do) at present? What do many people do? What must Nina not do what people must to do the ocean用英语以上述主题写作不少于100字,不多于200字题目是what people must do to the ocean? 1.Make a sing to tell people（ ）A.what they must do B.what must they do C.what do they must D.what they do must2.There are （ ）people in the sleeping car.A.too much B.too many C.much too D.much3.Children should（ ）their parents.A.respect B.t people,country,do,what,that What do most people use? What do English people use? what do people give?意思 what do we people from for what do people celebrate What do people do on this holiday? What do people usually do at Christmas? what do people usually do on Tancksgivingday? What do people usually do on vacation?