If you___________(不停地努力), you will be able to resolve the difficult problem soon

游客2023-07-24  23

问题 If you___________(不停地努力), you will be able to resolve the difficult problem sooner or later.

选项

答案 keep on trying

解析 本题考查keep on doing sth.的用法,keep on doing sth.意为“持续不断地做某事”。
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