Apples are sweet on fall.怎么改

Apples are sweet on fall.怎么改 Apples are sweet at fall.和Apples are sweet in fall.哪个是对的 Apples are sweet _______ fall.A.on B.in C.at The apples on the plate are bed,bed改一个字怎么改 THESE apples are sweet感叹句 There are some apples on the tree.的否定式怎么改?There _ _ _ apples There are two apples on the tree.改为一般疑问句怎么改? there are some apples on the tadle改否定句 Apples are sweet and yummy?汉语是什么? These apples are awfully sweet.不对为什么? are,sweet,the,apples(?) 连词成句 The apples are sweet.改为一般疑问句