skulked

"My younger sister is a teenager now, and she's starting to get more independent. "

"My obligation to my family means I need to visit them regularly. "

"Responsibility is a heavy burden."

"The student was cowardly and did not speak up in class when he disagreed with the teacher's explanation. "

"Teaching oneself to swim can be dangerous."

"He tried to conceal the truth about his health."

"The student made a furtive glance at the answer key during the test. "

"The government has complete control over the situation."

"The security cameras provided quick detection of the intruder. "

"The upstairs bedroom has a large window overlooking the park. "

"The student made a stealthy exit from the library, hoping no one would notice. "

"The cow was slowly chewing its grass. "