问题补充：
Instead of sights, Edison would spend the time in the public library.
A. seeing, to read
B. see, read
C. to see, to read
D. seeing , reading
答案：
A. seeing, to read
B. see, read
C. to see, to read
(答案→)D. seeing , reading
解析：句意为：爱迪生没有外出去看风景，他倒是常常把时间花在图书馆里。
固定短语：instead of +V_ing,而不是干--；spend +时间/钱+V_ing ，根据题意可知，此题D选项符合题意
