精选优质文档-倾情为你奉上To Whom It May Concern,This is to certify that XXXs English level is sufficient to communicate and work in our laboratory. XXX is highly welcomed in our group of XXXXXXX University as a visiting student. Based on my communications with XXX. I judge the level of his English to be advanced enough to allow him to study productively in my lab and to collaborate with my colleagues in the faculty.Therefore, I strongly support XXXs application and hope that he will be able
