__________theconvenienceofdigitalpayment,manyseniorcitizensstartedtousesmartphones.

Favorablepoliciesare___________toencourageemployees'professionaldevelopment.

Thefactthatsomanypeoplestillsmokeinpublicplace_______thatwemayneedantionwidecampaigntoraiseawarenessoftheriksofsmoking.

Itsoundslikesomethingiswrongwiththecar’sengine.,we’dbettertakeittothegarageimmediately.

Scientistshaveobtainedmoreevidence___________plasticisfindingitswayintothehumanbody.