tom ____ a farm with his family last holiday.[a.visited　 b.visit 　c.visits]

tom ____ a farm with his family last holiday.[a.visited　 b.visit 　c.visits]
the children ___ cows a moment ago.that ____ fun!
a.milk;is
b.milked;was
c.milk;was
did you ____ a good time?yes,i ____.
a.had;did
b.have;did
c.have;have