Professor Li and his wife are now at work on a novel next year.
A. to publish
B. being published
C. published
D. to be published
网友回答
A. to publish
B. being published
C. published
(答案→)D. to be published
解析：考查非谓语动词。句意：李教授和他的妻子现在在从事一部明年要出版的小说。根据时间next year指的是将来，应用不定式的被动式，所以用to be published，在这里作定语。选D。