The author thinks that Sunday seems to be the best day because i

The author thinks that Sunday seems to be the best day because it it a good day to ( ).
A、relax
B、keep fit
C、catch up on back reading
D、keep a plan
【正确答案】：C
【题目解析】：此题属于课文理解题。周日是这个时间是用来补上拖欠的阅读任务和其他作业的好时机。