请改正这两句英语,谢谢①the key for to solve a problem is to use the kno

请改正这两句英语,谢谢
①the key for to solve a problem is to use the knowledge that you have master
②the last step of the task is that advance the exam skill
dal8814 1年前 已收到5个回答 举报
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封ID专用ii 春芽

共回答了17个问题采纳率：88.2% 举报

The key to solve/solving a problem is to use the knowledge that you have mastered.
The last step of the task is to advance the exam skill.

1年前

2

lvkangxin 春芽

共回答了15个问题采纳率：73.3% 举报

1.the key to solving a......

1年前

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106317 幼苗

共回答了62个问题 举报

第一句把for去掉，master后加ed

1年前

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薄荷味粉红 幼苗

共回答了6个问题 举报

The key to solving the problem is to use the knowledge that you have mastered. The last step of this task is to improve your skills to take an exam.

1年前

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bbccdef 春芽

共回答了15个问题采纳率：80% 举报

第一句，把for删除，第二句把that 改成to

1年前

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