________,Johnhasbeentoseveralforeigncountries.
规定取消公行制度，外商可与华商直接交易的条约是()
Thewealthofacountryshouldbemeasured________thehealthandhappinessofitspeopleaswellasthematerialgoodsitcanproduce.
Thosewho’dliketovisittheexhibition________(sign)yournameshere.
Thedirectorrecommendedthatshe________(study)moreEnglishbeforegoingabroad.
