精选优质文档-倾情为你奉上 7B unit 6小练习I用所给单词的适当形式填空。1. He is so _(fool).2. These are_(connect) to cables under the ground.3. Do you know how to use the _(electricity ) machine?4. We should speak to the old _(polite).5. Are these _ (battery)?6. You look so_ _ today . (happy)7. What do you know about _(electrical).8. Two _(three) of the land is cover