Bhawna informed Sohail that she had completed the project the day before. Sohail replied that was excellent and inquired if she would present it the following day.
In indirect speech, the simple past tense in Bhawna's statement becomes past perfect, and "yesterday" transforms into "the previous day."
Sohail’s question is also reported by modifying "tomorrow" to "the next day" and adjusting the verb tense.