Jack is the tallest a___ the three students 求各位大神解答我知道这里应该用among,但是为什么不能用at ?

Jack is the tallest a_____ the three students. jack is the tallest student of all改同义句 jack is the tallest boy in our class 同义句 英文推理!Who is the tallest?Jack is as John.John is not as tall as Bob.But Ken is tallest than Bob.Who is the tallest of the four?A.Jack B.John C.Bob D.Ken Who is the tallest?Jack is as tall as Jhon.Jhon is not as tall as Bob.But Ken is tallest than Bob Who is the tallest?Jack is as tall as John.John is not as tall as Bob.But Ken is taller than Bob.Who is the tallest of the four?A.Jack B.John C.Bob D.Ken Jack is taller than John.And Jim is even __A tall B taller C the taller D the tallest 世界who is the tallest? who is the tallest?Jack is as tall as John.John is not as tall as Bob.But ken is taller than Bob.Who is the tallest of the four? 英语推理--------------Who is the tallest?---------------Jack is as tall as John.John is not as tall as Bob.But Ken is taller than Bob.Who is the tallest of the four?A.JackB.JohnC.BobD.Ken he is in our classa.the fourth tallest b.fourth tallest c.four tallest d.the four tallest 数词：He is ____ in our classA.the fourth tallest B.fourth tallest C.four tallest D.the four tallest he is ( )in our classA.the fourth tallest B.fourth tallest C.four tallest D.the four tallest who is the tallest in the group? The tallest building in the world is( ). Jack is the tallest a___ the three students 求各位大神解答我知道这里应该用among,但是为什么不能用at ? Jack is the tallest of ____ in his familyA any other member B all the members 这里的A为什么不选 请说明下 jake is the tallest a_____the three student.