【题目】At home, he keeps some pets, to which he ______ all his spare time.
A.spends
B.offers
C.devotes
D.provides

【答案】C
【解析】考查动词辨析。A. spends花费；B. offers提供；C. devotes奉献；D. provides提供。句意：他在家里养宠物, 他把所有的业余时间奉献在上面。devote...to sth./doing sth.把……奉献在……, 所以答案是：C