Electricity, like other forms of ______, has greatly increased in price in recent years. 

Have you made out your ______ for a passport?

In the end I lost my_______ and shouted at her.

I listened to Dr.Wilson’s lecture about the protection of wild animals,but I was unable to grasp its key _________.

The members of the club wouldn't run a _____ in entrusting（委托） the organization to an unreliable person.