Something must _____(do) to prevent flood from ______.(happe

Something must _____(do) to prevent flood from ______.(happe 正确形式填空1.you must do something to prevent your house ______ ( something must be done to prevent some students from froping you must do something to prevent your house ___ A:to be brok You must do something to prevent your house_.A to be broken It was said that something (do)to prevent the water from bei Something must be done to prevent city________ by thick smok something must do,something must not do must 加to we should do our best to prevent these rivers from _____(pol People must plant trees to prevent sandstorm_____ A from hap We must do everything possible to prevent such things from__ ·句子转换We must do something to protect our earth from being po