In Europe _______ are the two leading contenders for a global reservations system.
C
暂无解析
This is ________ good reading habits are not only an important study skill for the student, but also an important life skill for anyone.
The first task of a brochure is to _______.
In1995,anaverageof_______ofdomestictravelerswentonsightseeinginChina.
_______ he goes, she will go, and she never cares _______ happens.