练习题： 1.The Great Green Wall will stop the wind from ________(blow) the earth away. 2.Mr Smith kept on _____ (ask) the players to remember-----TEAMWORK 3.Alice didn't hear what the teacher said just now,so she doe 't know how ____ (do) the problem. 4.The policeman asked the old gra y to put down her heavy box and let him ______ (carry) it for her. 5.用help,ha en,listen,have,ask,be,plant,mi ,leave,look的适当形式填空: (1).WangHai is a good comrade.He always does his best ________others. (2).Dig the hole big enough,or the trees can’t ___________well . (3).It's time for cla .Let's stop _______to the teacher. (4).Her face turned red when she _______ to sing a song for all of us. (5).She is older than Mary but ________much younger. (6).--I can't find my keys.--Maybe you ___________ them at home. (7).We waited in the next room while they ____________a meeting. (8).Hurry up.You __________the train if you don't. 思考题： 用 send,show,turn,cost,write,fly,get,stop,see,do,hear,go 的适当形式填空 1.____ you ___ each other since you left school ten years ago? 2.What ___they ___at 8:00 yesterday evening. 3.The Smiths are getting ready ___to Australia for their holdiay. 4.The beautiful jacket___too much , doe 't it? 5.Lucy and Lily were playing cards when they ___ a loud knock at the door. 6.The radio says the rain ___later on. 7.The boy ___to ho ital as soon as the traffic accident ha ened. 8.Today films___in English everywhere in the world. 9.It's summer now.The days___longer and the nights shorter. 10.Mother ___ to Shanghai and she'll be back in a week or so.