Anearlytypewriterproducedlettersquicklyandneatly;thetypist,_____couldn'tseehisworkonhismachine.
A、however__________ the convenience of digital payment, many senior citizens started to use smart phones.
Thefactthatsomanypeoplestillsmokeinpublicplace_______thatwemayneedantionwidecampaigntoraiseawarenessoftheriksofsmoking.
My camera can be _____ to take pictures in cloudy or sunny conditions.
--- Are you still mad at her?
---Not really, but I can’t ______ that her remarks hurt me.
Morewindpowerstationswill____________tomeetthedemandforcleanenergy.
