英语语言证明怎么写

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公派出国的吧：
Certification of English Proficiency
To whom it may concern,
With this letter I would like to certify (date of birth ) has adequate English proficiency.He is highly welcomed in to pursue his PhD.We have evaluated the English proficiency of Mr .He performed well in the English video interview.Based on his good performance of online interview,emails and research papers,we hereby certify that M ’s English level is sufficient to communicate and work in our lab so that no more English language tests will be required on him.
We wish Mr all the best for the application.
Best regards
Sincerely,
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