选词填空

cut down消减，压缩，缩短　　cut off切断，断绝　　cut out删(省)掉，戒掉

(1)We must ________ our expenses．

(2)We were for ________ the cost of production．

(3)Let’s ________ the unimportant details．

(4)They were then almost completely ________ from the outside world．