Humanbehaviorismostlyaproductoflearning________thebehaviorofanimalsdependsmainlyoninstinct.
A、soShe had clearly no ________ of doing any work, although she was very well paid.
________somanypeopleintheUnitedStatesbeenoutofworkastoday.
We regret to ________ that it may not be possible to deal with every request.
I'msorryIforgottowrite;Ihadsomuchelse________mymind.
A baby might show fear of an unfamiliar adult, _______ he is likely to smile and reach out to another infant.
