| 1 | His voice trembled with excitement. | |
| 2 | His high notes quavered when he sang the "Internationale". | |
| 3 | Her slight frame was shaken by bouts of coughing. | |
| 4 | Mom, why do my legs tremble when I hear his voice? | |
| 5 | Dad's lower jaw trembled as he stared at the uplifted paw. |