Thethreementriedmanytimestosneakacrosstheborderintotheneighboringcountry_____bythepoliceeachtime.
Ofcourse,()mostimmigrantsdidnotgetrichovernight,buttheofthemwereeventuallyabletoimproveupontheirformerstandardofliving.
_____ifIhadarrivedyesterdaywithoutlettingyouknowbeforehand.
Paragraphs2and3explain________.
Whileintegrasedeletesanimmunecell'sgeneticmaterialandreplacesitwithitsown,itactslike________inawordprocessor.