___________theconvenienceofdigitalpayment,manyseniorcitizensstartedtousesmartphones.

['A. To enjoy', 'B. Enjoying', 'C. To have enjoyed', 'D. Enjoy']

📖 相关文章

• AfewmonthsafterhehadarrivedinChina,Mr.Smith___________inlovewiththepeopleandculturethere.
• Unliketraditionalgyms,app-backedgymsofferpeople___________optionstoexercise.
• Favorablepoliciesare___________toencourageemployees'professionaldevelopment.
• Nowadaysthe___________fortravellingisshiftedfromshoppingtofoodandscenery.
• Scientistshaveobtainedmoreevidence___________plasticisfindingitswayintothehumanbody.
• Morewindpowerstationswill____________tomeetthedemandforcleanenergy.
• Thedoctorshareshisphonenumberwiththepatients__________theyneedmedicalassistance.
• Themusicianalongwithhisbandmembers___________tenperformancesinthelastthreemonths.
• Wehaveenteredintoanage_______dreamshavethebestchanceofcomingtrue.
• I've________mymoneyyesterday.NowIhavenomoneytobuyfood.