2. She (not / study) ____________ at the moment.
В данном предложении требуется выбрать между Present Simple и Present Continuous. Фраза "at the moment" указывает на действие, происходящее в данный момент, поэтому необходимо использовать Present Continuous.
Subject + is/am/are + verb + -ing
She is not studying at the moment.
She isn't studying at the moment.
Ответ: She isn't studying at the moment.