题目内容：

The book __ __ __(write) now and __ __(believe) to be popular with young children.

优质解答

The book 【is being written】(write) now and 【is believed】(believe) to be popular with young children.
这本书正在被撰写,相信会受到年轻的小孩欢迎.
满意的话,记得采纳咯!^_^