7. She / choose / a sandwich →

Translate to Russian:

She does not choose a sandwich.

Explanation:

To form a negative sentence in the present simple tense with the pronoun 'She' (third person singular), we use the auxiliary verb 'does' followed by 'not' and the base form of the verb. The verb 'choose' remains in its base form. So, 'She chooses' becomes 'She does not choose' or 'She doesn't choose'.