Due to lack of protection, the hills which used to be covered withgreen trees are now mostly _________A. blank B. bareC. vacant D, hollow
______ gets homes first is to cook the supper.
______ Wang Feng looked after the old woman a whole year moved us all.
The monitor suggested that we ______ for a picnic on Sunday.
He always thinks of _______ he can do more for the people.
______ halfway through the exercise, the teacher changed his mind and collected all our papers.