hurdles

""The group of friends issued playful challenges to each other to see who could build the tallest sandcastle." "

"The school's fortification project involved adding high walls and security cameras to improve safety. "

"The temporary at the bakery was only there for the summer. "

"to enclose lands"

"The flowers were artificial, and he thought them rather tacky."

"The children variously expressed their excitement about the upcoming school trip, with some jumping up and down, others chattering excitedly, and still others quietly humming. "

"My sometimes neighbor, a retired teacher, still visits the school occasionally. "

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

"Many working parents rely on childcare to ensure their children are safe and cared for during the day. "

"The highway's revetments prevented the slope from eroding during the heavy rains. "

"The student perceived the teacher's frustration by the tone of her voice. "

"We constructed the radio from spares."