tranquilize

"He is a student of life."

"My friend told me there was something in the box, but I didn't know what it was yet. "

"The price of gasoline has been tracked daily for the past month. "

"My daughter's teacher is very kind and helpful. "

"Do you need a gift for that special someone?"

"After a long day at work, a hot bath always makes me feel tranquil. "

"The contest was long, but the Romans finally conquered."

"Although the birds fly north for the summer, they return here in winter."

"The long commute was very stressful. "

"The night before his wedding was a restless one."

"The escaped lion was finally tracked down, tranquilized, and safely returned to the zoo."

"The factory was evacuated after toxic gases escaped from a pipe."