After he retired from office, Tom painting for a while , but soon lost interest.
A. kept up
B. took up
C. sped up
D. cleaned up
网友回答
A. kept up
(答案→)B. took up
C. sped up
D. cleaned up
解析：考查词组：A. kept up维持B. took up开始从事，占据C. sped up加速D. cleaned up打扫，句意：退休后，汤姆开始学习绘画，但很快就失去兴趣了。选B。