pride goes before a fall ( arrogance causes failure )

　　Hit the book:

　　Escalator

　　Virtually

　　Trap

　　At ease

　　In case

　　Handrail

　　Trip

　　Stay put

　　stroller

　　There are numerous escalators all over the nation and virtually all people use these machines. It is even believed by some that riding escalators are much safer than riding elevators. Actually, it is not. As accidents happen in elevators, so do in escalators. They may be rare but still, it happens.