Fill in: am,is, are.
1. Where is Ann?-In the living room. She arranging flowers in the vase.
2.Why William cruing?-He can't find his ball.
3.Whatyou doing?-Sh-sh! It's a surprise.
4.The childrendecorating the room for the New Year party.Will you help them?
5.Whosinging?- My sister.