Sentence 1: It's time for finals next week. 
 Sentence 3: I hope to do well on my exams 
 Sentence 4:  I have been taking practice tests and using flashcards 
 Sentence 5:  I am confident that I will ace the tests 
 Option 1: I haven't studied at all yet. 
 Option 2: I have been busy studying for the past few days.