Struggles with the Common Application...help!?

<p>Can my teacher send in a Letter of Recommendation through the Common App after I have submitted my application to the schools? Or do they have to mail in the recommendation?</p>

<p>My application is due on January 1st, but my teacher is on her honeymoon and doesn't get back till next week. I've heard that universities are pretty lenient on School Forms..on average, how late can the school forms be turned in though?</p>

<p>I would also like to know the same thing. I am done with all of my common application requirements except one of the teachers has not submitted his recommendation. Can I go ahead and submit my common app? Will the teacher’s recommendation be submitted later on?</p>

<p>Also, if I say on the Common Application that someone will write my letter of rec, do they HAVE to write it? I know atleast one of my teachers will be willing to write me a LOR, but I’m not sure which one yet. If I submit all of their names on the common application, and only the 1 teacher I need submits their LOR, will my application be valid? Or will ALL of them have to write a LOR for my application to be valid?</p>