underlie

"Despite the tempting offer, Sarah showed a noticeable reluctance to stay late at the office. "

"My favorite position in the classroom is near the window. "

"The teacher's lecture underlay the entire lesson plan. "

"The solid rock underlies the sandy beach. "

"The path from the school to my house goes directly through the park. "

"The books were stacked neatly beneath the desk. "

"The teacher threw a challenge to the students: "Who can solve this difficult math problem?" "

"The geologist pointed to a distinct dark stratum in the rock formation, indicating a layer of volcanic ash deposited long ago. "

"The four noble truths summarise the main doctrines of Buddhism."

"The heavy box underlying the lighter one caused the whole stack to wobble. "

"My brother will participate in the school's fundraising walk. "

"The foundation of his institute has been wrought with difficulty."