选出最适当的单词填入空格内. 1 Delicate machines should be handled with great ( ) .a.force b.care
2 The farmers drained the swamp to get more ( ) for crops.a.land 来源：考资网
b.water
3 With brooms we ( ) our rooms.a.clean b.decorate
4 ( ) voices hailed us as we entered the hall.a.Angry b.Cheerful
5 The foul air in this room should be ( ) .a.changed b.cooled down
答案：b a a b a
