Final answer:
The sentences can be formed using past perfect continuous tense.
1. I had been working hard all day.
2. They had been playing football.
3. Somebody had been cooking.
4. She had been dreaming.
5. He had been painting the room.
Step-by-step explanation:
Correct use of commas involves understanding natural pauses and clause separation, while verb tenses must be consistent to maintain clarity in conveying when actions occur in sentences.
Understanding the use of commas and selecting the correct verb tense are essential English skills. When inserting commas into sentences, we need to consider natural pauses, clause separation, and list items. Verb tenses convey when an action occurs, and consistency within sentences is crucial to maintain clarity.