下列各句加点的词语使用不正确的一句是（ ）

Such poets as Shakespeare _____widely read, of whose works, however, some _____difficult to understand. [ ]

下列各组词语中，没有错别字的一项是

Someone often _____ in the next room.

Have you ever read ___________ book How to Win Friends & Influence People—Yes. It’s ___________ educational book.