连词成句：must,every,planted,trees,more,be,year(句号)

连词成句：must,every,planted,trees,more,be,year(句号) More trees must be planted every year.(改为一般疑问句) trees in many we the planted park连词成句 详细说明为什么.More trees ______ on the hill .A,must be planted B,b Trees are planted every year.这句为什么要用被动语态 trees are planted in our city every year. help,air,trees,the,keep,clean连词成句句号 More and more trees should be planted in spring to________sa ______young trees must be planted on the hill （ ）Twenty more trees will be planted on the mountain. 连词成句by the foreign visitors,growing well,planted,the trees,a twelfth,two,trees,the,I,on,of,planted,March（连词成句）