regardful

"Check the oil in your car once a month."

"He is a student of life."

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

"The student listened attentively to the teacher's instructions. "

"The observant police officer noticed that my tax disk was out-of-date."

"It is of great importance that you act in a respectful manner towards the duke and duchess."

"My brother constantly helps his younger sister with her homework, demonstrating his steadfast loyalty and support. "

"Please listen carefully as I explain.  I like to listen to music."

"The teacher kept a watchful eye on her pupils during the school trip."

"The speaking portion of the exam made me nervous. "

"My teacher explained the new math concept, and I understood it perfectly. "

"My sister's politeness made a good impression on the new neighbors. "