Dear Mr./Ms. (最好找一個具體的人比較有禮貌)I am XXX, a student who is really interested in applying the XXX university.I notice that I should submit my TOEFL and GRE grade during the application process. However, because of some personal reasons(最好寫明白是什么原因，不然招生官會覺得你在找借口), I am not able to attend the TOEFL or GRE tests and get grades before the deadline. If I don't provide any TOEFL or GRE grade before the deadline, will I be considered as an applicantIf I am qualified to apply without those grades, will the lack of grades be a huge disadvantageI will try to take the TOEFL and GRE tests as soon as possible. If I submit the grades in March, will them be acceptedI am really interested in studying in the XXX university, and I truly believe that it is very suitable for me due to my personality and experience. Looking forward to your replySincerely,你的名字