14.【单选题】真理与谬误之间的相互关系是：（）

When are the passengers required to wear a seat belt?

What is the part of the aircraft where passengers are seated called?

It took me a while to ____ this word in this thick book.

____ passengers do not have to go through customs.

It took him a full day to ____ those bags.

The captain needs to be ____ of this.

I am terribly sorry I can＇t ____ your invitation due to my business.

The e-ticket is very ____ for everyone.

You can check the ____ of Spring Airlines for the flight to Guangzhou.

There are verious ____ of movies on the plane.