I knew I had this major biology test to study for and that if I went out, I would need to cram all my studying in one night. 

I have to study for my test otherwise I will be stressed

a. I have to study for my Biology test tonight otherwise I will be very stressed

b. I have to study for my major Biology test tonight otherwise I will be very stressed

c. I have to study for my Biology test tonight otherwise I will be stressed and very overwhelmed

d. I have to study for my test I will be stressed

e. I study for my test otherwise I will be stressed

f. Study

g. Study, stress

h. Study = a state of contemplation. It doesn’t fully embody the definition I had in mind but I know studying is a form of contemplation. Synonyms = learn, investigate

i. I have to study for my test otherwise I will be stressed because I will fail if I don’t study

j. I have to study for my test otherwise I will be stressed since I want to have a good grade on the test in order to get into the university I want to apply into

k.