优质解答
开头：
Hi Bob;
Hello Bob;
Dear Bob;
Morning Bob;
To whom it may concern;
结尾：
Regards
Best Regars
Cheers
Your Sincerely
Many thanks
Kind Regards
开头：
Hi Bob;
Hello Bob;
Dear Bob;
Morning Bob;
To whom it may concern;
结尾：
Regards
Best Regars
Cheers
Your Sincerely
Many thanks
Kind Regards