________evidencethatlanguageacquiringabilitymustbestimulated.
Theprofessorcouldhardlyfindsufficientgrounds_____hisargumentsinfavorofthenewtheory.
Weallthinkthat_____noneedtomakelawstopreventtheyoungfromgettingmarriedduringtheircollegelife.
Thisrobotissupposedtosavealotoflabor,butitremainsaproblemifit______.
You____himsoclosely;youshouldhavekeptyourdistance.
Partoftheworkistobefinishedtodayand______bythisweekend.