Answer and explanation

Correct answer: B. has studied

  1. Step 1: Words like "just" link a past action to the present, so the present perfect is used.
  2. Step 2: The present perfect is "has studied".
Answer
has studied.
Why not the others: studied, is studying and will study do not fit here.

Practise more Error Identification and Written Expression.

Free questions with an explanation for every one, and full timed University of Jordan English Proficiency Test (JU-EPT) mock tests.