Anearlytypewriterproducedlettersquicklyandneatly;thetypist,_____couldn'tseehisworkonhismachine.
Favorable policies are ___________ to encourage employees' professional development.
__________ the convenience of digital payment, many senior citizens started to use smart phones.
Mycameracanbe_____totakepicturesincloudyorsunnyconditions.
Favorablepoliciesare___________toencourageemployees'professionaldevelopment.