singleminded

"My grandfather played a single of Elvis Presley at the family gathering. "

"I spent an hour at lunch."

"I have a house and a car."

"I need to study my biology notes."

"He tried his very best."

"My sister earned a degree in psychology from the university. "

"The doctor performed a thorough medical to determine the cause of her headache. "

"From Earth, we could observe maria, the dark, ancient lava plains on the Moon, with just a pair of binoculars. "

"My lifelong goal is to get into a Hollywood movie."

"My purpose for studying hard is to get good grades in school. "

"The pursuit of a better education motivated her to study hard. "

"I have to focus on my work."