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。