Notuntilrecently_____thatThompsonhadbentellingthetruthallalong.
B
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Itisdifficultto________theimplicationbetweenthelines.
Theprofessoraskedaquestion,andDavid________agoodanswer.
_______foryourlaziness，youcouldhavefinishedtheassignmentbynow.
Ittookmeamonthtogetrid_______thecough.
CharlesSmith,______wasmyformerteacher,retiredlastyear.