Many animals migrate（迁徙）． （1）They travel in big groups from one place to another． Some animals migrate when the weather changes． Others set off to find new food and water． （2）Lots of animal migrations take place in Africa． Here， you can read about three of them．
As the seasons change， zebras（斑马） travel in large groups．They make the trip year after year．（3）斑马为什么走那么远？They are looking for better grass to eat．
Wildebeests（牛羚） are always on the move． They travel by day and by night． Their journey can take them through rivers and streams．（4）牛羚擅于游泳．But crossing the water is dangerous．
Flamingos（火烈鸟） fly together in the shape of V． They head for Africa's salt flats（盐滩）． A salt flat is an area of water that has dried up． During the rainy season， a salt flat becomes a wetland． （5）It's a great living place for flamingos．
将划线的句子译成汉语或英语．
（1）
（2）
（3）
（4）
（5）
根据汉语意思完成句子你通常几点起床？
________ ________do you usually________ ________？我通常五点起床。
I________get up________five o’clock．他几点吃早饭？
What time________he________ ________？他七点吃早饭。
He________breakfast________seven o’clock．多么有趣的吃早饭时间啊！
________ ________ ________time to eat breakfast！
每天早晨我很快就穿好衣服。
I ________ ________ quickly every morning．
根据句意及所给汉语或首字母提示完成单词I have lost my interest in________(化学)．
Most of our________(知识)is at second hand．
He is an________(活跃的)member of the school’s stamp club．
He drove the car at full________(速度)through the town．
Did you ever d________who sent you the flowers？
关键语法
根据汉语意思补全句子。我们到机场的时候，飞机已经起飞了。
By the time we got to the airport，the plane________ ________ ________ ________．我起床的时候，我爸爸已经在淋浴了。
By the time I got up，my father________ ________ ________ ________ ________ ________．我到达校门口的时候，校车已经离开了。
By the time I got to the school gate，the school bus________ ________ ________．在我买那个相机之前，莉萨已经向汤姆借了一个。
Before I bought the camera，Lisa________ ________ ________ ________from Tom．
核心句型许多人跑到他们当地的超市尽可能多地买盐。
Many people ran to their local supermarkets to buy________much salt________they could．大卫使它听起来如此逼真，以至于成百上千的人都相信了这个故事。
David made it sound________real________hundreds of people believed the story．