问题补充:
Immediately he was elected monitor, James his duties since.
A. took up
B. has taken up
C. made up
D. has made up
答案:
A. took up
(答案→)B. has taken up
C. made up
D. has made up
解析:考查时态。Take up开始从事;make up组成,整理。句意:自从詹姆斯负起他的责任,詹姆斯立即被选为班长。结合语境可知下文描述的现在已经完成的动作,选B。