⁌ ULY ⁍added a comment 7 years ago
Ekaterina, "passed THE/HER exam" ... and no comma.
таня сдала экзамен, потому что она напряженно училась
Tanya passed her exam because she studied hard (for it)
Tanya passed exam,because she studied hard
Tanya passed her exam because she was studying hard.
Ekaterina, "passed THE/HER exam" ... and no comma.
Elizabeta, "because she was studying hard" sounds like she was studying WHILE she was taking the exam. You need the simple past here.
Одни перед смертью надышаться не могут, другие даже во время экзамена зубрят))