It’s time he piano. Don’t you think he has wasted too much time online?
A. stopped to take up
B. stops taking up
C. stopped to leave alone
D. stops leaving alone
网友回答
(答案→)A. stopped to take up
B. stops taking up
C. stopped to leave alone
D. stops leaving alone
解析：考查句型：It’s time (that)后用一般过去式或should do, should 不能省略，意为：做什么的时间到了，句意：他停下来弹钢琴的时间到了。难道你不相信他在网上已经浪费了太多的时间吗？stop to do 停下来去做某事，stop doing停止做某事，所以选A。