Airlines will （） to allow for the high number of （）, but must exercise caution. A: overbook, independent travelers B: overbook, no-shows C: underbook, business travelers D: underbook, repeat travelers

The travelers, ____, are the opportunitists.

Many ________ had a hard ________. A: travel；trip B: travelers；travel C: travelers；trip D: trips；travel

______ Travelers get stingier with their loyalty.

Travelers should be tolerant of the habits and customs of others.

In a backpacker hotel, travelers have to share room with others.

Travelers ____________ would choose to go there by train instead of by plane.

Travelers on a____would choose to go there by train instead of by plane.

English is used ______ travelers and business people all over the world.

Travelers on a tight _______________ would choose to go there by train instead of by plane.