(2014·安徽省芜湖三校一模)A recent study has  ________an unexpected conclusion that the African elephant should be divided into two different species.

After going into the concert hall, the mother _____ a friend and went over to greet him.

—How long have you been in this office?—Just a few minutes.My cousins ________ here together with me.

This company was ______ of using misleading advertisements in its promotion of the weight-loss pills

(2014·安徽皖南八校三联)A positive attitude，________with willingness to seek appropriate help and exercising solid study habits，will do much to determine how well you do in your studies.