It's a Sunday morning.There（ ）a lot of people in the park.So

It's a Sunday morning.There（ ）a lot of people in the park.Some pioneers are in the
It's  a  Sunday  morning. There（ ）a  lot of  people  in  the  park.  Some  pioneers are  in  the  park,too,and  they  are（ ）a   good  time.Some  are  playing（ ）and  some  playing  football.Look（ ）that big  treethree.Underitarethreechildren.（ ）are  they  doing  under  the  tree?Oh,they  are（ ）them  playing.Mary  is（ ）an  interesing  story.Where  are  Sam  and  Gina?They  are  sitting（ ）（ ）Mary.What  are  they  talking about  ?Sorry,I（ ）know.