I’m not good at Maths, so I don’t know _________ out this difficult Maths problem. A. when to work B...
2023-01-05 15:07:18 25次 2014-2015学年江苏无锡宜兴市八年级3月月考英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
I’m not good at Maths, so I don’t know _________ out this difficult Maths problem.
A. when to work B. who to work
C. what to work D. how to work
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