Translation of Lieblingsfach

It would be an advantage if you could send it via DHL, UPS or another Currier, because the parcel was lost once when we sent it with regular mail. Please send me a reference number after you send it.
The fact that James is active in many industries in Colorado, does not mean that the same must apply abroad, let's say in Spain. This fact complicates the ability to learn English in everyday life.
I am in my German lesson and I'm learning about the subjunctive. I had never heard about it before. Can you ever deal with all Verb conjugations? I just totally misunderstand the past tense!