。我去移民局申请时认为有我妈的住院证明就行了,没想到.....现在我想补充这封信以说明我确实急需要回去,可不可以?
-Ask the Dr. give you such a letter needing you to come back due to your mother's serious illness and it may work.
是另外申请呢?还是只是补充说明昨天的申请即可?