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
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.
Because they hid the people and made sure they were the only ones who got to keep tabs
The answer to this question is B
