Hethoroughlyunderstoodthesociety__________.
A、Hethoroughlyunderstoodthesociety__________Iboughtthiseighteenthcenturywritingdeskataquite________price.
SinceWilliamhadbeenseriouslyillforseveralmonths,hisparentswereworriedabout________toreturntoschoolfull-time.
________,Johnhasbeentoseveralforeigncountries.
It________asashocktorealizethatIwasnotaloneintheroom.
Insomeschoolschildrenwhoprefertoreadbooksratherthan________footballbecomesocialoutcasts(被拋棄者).