get the firstprize/be the first&No.1 1.We must work hard at our study.(改为同义句) We __have_ _to__ __work_hard at our study. 2.Is your favourite animal dog,Jim?(改错) Is your favourite animal a dog,Jim?3.学生们用很多方法展现他们的学校生活。(用英语翻译) The students_take/use many ways/methods_to exhibit their school life_. 4.西方学生喜欢在教师后面和同学搞恶作剧。 Students_in the West_like__to play tricks with classmates_at the back of the classroom.