My opponens pollicis muscle hurts.

He is doing special exercises to strengthen the opponens digiti minimi muscle of his foot.

He underwent surgery due to an injury to the opponens digiti minimi muscle.

He tried to change history by using a time leap to go back to the past.

He tried to change the past by time traveling.

Could you attend the meeting on my behalf?

Do you need a plastic bag?

He was half dead from fatigue.

Ta decided to remove unnecessary things to clean his room.

In response to the enemy's attack, we are considering a retreat.