WhenIcamethroughthecustomsattheairport,Ihadtopay________onaclockIhadbought.
A、taxesAsyoulikepopmusic,__________Ilikeliterature.
It'smore________tobuyaseasonticketifyoutraveleveryday.
Forthenewcountrytosurvive,________foritspeopletoenjoyprosperity,neweconomicpolicieswillberequired.
SinceWilliamhadbeenseriouslyillforseveralmonths,hisparentswereworriedabout________toreturntoschoolfull-time.
________theconcerthadbegundidwerealizewhatasplendidshowitwasgoingtobe.
