—I cant decide which book to read. — you read the book review?A. Why not B. Lets C. Why

问题补充：

—I can decide which book to read. — you read the book review?

A. Why not

B. Lets

C. Why don

D. Perhaps

答案：

A. Why not

B. Lets

(答案→)C. Why don

D. Perhaps

解析：Why not后面接动词原形，表示为什么不做某事；Lets让我们……；Why don 为什么不……；Perhaps可能，或许；句意：我不能决定读哪本书。——为什么不读读书评？结合语境可知选C。