Humanbehaviorismostlyaproductoflearning________thebehaviorofanimalsdependsmainlyoninstinct.
A、so________they'vegottoknoweachotheralittlebetter,theygetalongjustfine.
I'm______tograduateinthenexthalfoftheyear.
Let'sdrink_______Dicks'successinbusiness.
SinceWilliamhadbeenseriouslyillforseveralmonths,hisparentswereworriedabout________toreturntoschoolfull-time.
________theconcerthadbegundidwerealizewhatasplendidshowitwasgoingtobe.
