What are four sentences for the word grumble?

1. The old man grumbled about the noisy teenagers, wishing they would just go away.

2. After a long day of work, the exhausted worker grumbled as he carried his heavy briefcase home.

3. The dog grumbled in its sleep, a low rumble echoing through the quiet room.

4. The car's engine grumbled to life, sputtering and shaking before finally settling into a smooth purr.