underpasses

"The divers encountered a huge school of mackerel."

"Many railroads roughly follow the trace of older land - and/or water roads"

"The construction workers built a tunnel under the road to avoid disrupting traffic. "

"The underneath of the aircraft was painted blue."

"The child crossed the street safely, looking both ways before stepping off the curb. "

"The school bus is a highway for getting students to school safely. "

"Go easy on him: he is but a child."

"I solved all of the acrosses, but then got stuck on 3 down."

"A big obstacle to understanding the manual was that it had been poorly translated from the Japanese."

"Put a cross for a wrong answer and a tick for a right one."

"The teacher praised the students' similar answers on the math quiz. "

"She struggled to play the difficult passages."