To study a foreign language, __________.
A、agooddictionaryshouldbeboughtD
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Hethoroughlyunderstoodthesociety__________.
________fromtheoccasionallatenightparty,ourneighborsareveryquiet.
Iboughtthiseighteenthcenturywritingdeskataquite________price.
It'smore________tobuyaseasonticketifyoutraveleveryday.
Thewealthofacountryshouldbemeasured________thehealthandhappinessofitspeopleaswellasthematerialgoodsitcanproduce.
