1.Keeping a pet at home is _____.

1.Keeping a pet at home is _____.
A.a great fun B.great fun C.great funs D.funny
2.The puppy____if Kitty and Ben_____it.
A.will die···didn't save B.has dies···haven't saved
C.would die···didn't save D.would die···wouldn't save
3.Dogs ___ men's friends for millions of years.Early men___ them for hunting.
A.were···helped B.have been···helped
C.were···used D.have been~···used