encumbers

"You must do your homework before you can watch television."

"The student's ability to concentrate in noisy environments was crucial for success in the class. "

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

"My friend told me there was something in the box, but I didn't know what it was yet. "

"The teacher explained the new math concept quickly. "

"After suffering diahrroea, the patient was restricted to a diet of rice, cold meat, and yoghurt."

"The heavy snow was a major impediment to getting to school on time. "

"My son wore his backpack to school every day, carrying his books and lunch. "

"The heavy backpack was a burden for the student walking home from school. "

"He is a student of life."

"High-heeled shoes may be fashionable, but they can also be a hindrance to walking."

"The complicated instructions on the new software difficult me from completing the project on time. "