obstruction

"The condition for getting a raise at work is meeting your quarterly targets. "

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

"The key functions of a refrigerator are to keep food cold and prevent spoilage. "

"Heavy traffic often impedes my commute to work, making me late. "

"The lack of sleep resulted in a poor performance on the math test. "

"The traffic is slow during rush hour."

"I unintentionally deleted the important document from my computer. "

"The fallen tree obstructs the road, making it impossible to drive through. "

"The fallen tree obstructed the road, making it impossible to pass. "

"The fallen tree was obstructing the path to the school. "

"The student intentionally missed the first few days of school to avoid the difficult math test. "

"The pipe is blocked."