问题补充：
---I’m sorry to have much of your spare time.
---That’s OK, and I am glad to help you.
A. taken up
B. taken on
C. taken off
D. taken in
答案：
(答案→)A. taken up
B. taken on
C. taken off
D. taken in
解析：考查词组：A. taken up占据，开始学习，从事，B. taken on呈现额，雇佣，承担，C. taken off脱下，起飞，D. taken in欺骗，吸收，理解，句意：--很抱歉占用了您这么多空余的时间。--没关系，我很高兴帮助你。选A。
