Question

Has she studied for the test

Answer 1

Respuesta: She has studied for the test

Explicación:Si fuera como dice tu pregunta diría acaso ella estudio?

Sería en modo de pregunta y si es pregunta solo pon signo de interrogación

Answer 2

Respuesta:

She was study for the test (present continuos) yesterday, she studied for the test (simple past)

Explicación:

The WH Question need to put the (?), But not just WH, if you want to ask a question you need to put the (?)