The book is a story book.That book has a red cover.(合并句子0
That book ____ has a red cover ___ a story book.
The teacher wrote some words on the blackboard.the pupils copied all of them down.（合并句子）
The pupils copied down_____The teacher wrote on the blackboard.
Even abottle of water is very important to the man under the bricks.
Even abottle of water____a real difference____the man under the bricks.
以下是答案:
The book is a story book.That book has a red cover.(合并句子0
That book _which___ has a red cover __is_ a story book.
The teacher wrote some words on the blackboard.the pupils copied all of them down.（合并句子）
The pupils copied down__what___The teacher wrote on the blackboard.
Even abottle of water is very important to the man under the bricks.
Even abottle of water_makes___a real difference_to___the man under the bricks
