Answer:
I believe the answers are:
I've applied to three universities----> It deserves how many times it happened
I've seen this film before----> It happened at an unspecified time in the past
Step-by-step explanation:
The word 'three' is explaining to us that she/he had applied many times.
'Seen before' tells us that it happened in the past but it does not give us a specific time, day or date in the sentence.