something must_____(do）to stop people_____(cut）trees to protect our Earth

something must_____(do）to stop people_____(cut）trees to protect our Earth He must_____(read) the book something something something something something something something something students must_____(work)hard at school. 用正确形式填空 We must_____(send)her to the hosptal at once the spelling of the word must_____(pay) attention to At the crossing,when the light is red,we must_____快回答!快!在线等!~!~!~! 我们必须尽我们的最大努力提高英语 We must_____ ______ _______ _______improve our English people must_____(follow) the rulestwice用社么提问是how long吗 I must_____[ask]my mother for it.Mr brown is____[they]father this old man is ill.He must_____(send) to the hospital.