retains

"After the heavy rain, the river was flooding the nearby town. "

"I am organizing my books on the shelf by color. "

"My grandfather is a retainer of old traditions, and he keeps them alive in our family. "

"Responsibility is a heavy burden."

"The new school management software allows teachers to easily track student progress. "

"I brush my teeth regularly to prevent them from turning yellow."

"The rain is downstreaming into the valley. "

"Marriage is a contract."

"to allow a servant his liberty;  to allow a free passage;  to allow one day for rest"

"My ownership of the bicycle means I am responsible for its upkeep and safety. "

"The library has possession of the rare book, even though it doesn't own it. "

"The school has high academic standards, so students must study hard to succeed. "