高二英语课下作业北师大版选修7《Unit 21 Human Biology》Section Ⅳ语言点二 应用落实

111.介词填空1This time shes leaving for good; you cant expect to see her.2I hope the weather will clear up before Sunday.3All their attention was focused on only one thing how to solve the problem of water pollution.4First of all, you have to wash your hands.5The festival will be great for our city and for the country as a whole.6You will benefit from jogging a lot if you stick to it.单项填空1It has been raining for three days. I hope it _.Awill clean upBwill clear upCto clean up Dto be cleared up解析：选B。句意：连着下了三天雨了，我希望天会放晴。clear up“(天气)转晴”，故从B、D中选；另hope后可接宾语从句，但不能跟复合结构，故选B。2We thought shed come for a visit, but it seems she is staying _.Afor good Bfor funCat length Dfor nothing解析：选A。句意：我们本以为她是来拜访的，但她看起来似乎要长期待下去。for good“长期地，永久地”，符合句意。111