Directions : Which of the phrase/ word from the options (a), (b), (c) and (d) given below each sentence should replace the phrase printed in bold letters to make the sentence grammatically correct? If the sentence is correct as it is, mark (e) i.e., “No replacement required” as the answer.

Q:

I want to work as an interpreter in the future, so I did studied Russian at university.

• 1
  so I am studying
• 2
  so I am learn
• 3
  because I am studying
• 4
  since I am learning
• 5
  No replacement required