In Europe _______ are the two leading contenders for a global reservations system.
A、SABREandGALILEOC
暫無解析
________inthought,healmostranintothecarinfrontofhim.
WhichofthefollowingcountryisnotamemberofOECD?
It_______fortwohoursnow
_______inthought,healmostranintothecarinfrontofhim.
Thisis________goodreadinghabitsarenotonlyanimportantstudyskillforthestudent,butalsoanimportantlifeskillforanyone.