[解析]
W:Dad,where is my baseball?
M:Is it under the bed.Alice?
W:No.it isn't.Oh,I see it.It's under the desk.And where's my watch.Dad?
M:Let me see.Oh,it's on the table.
W:No,the blue watch isn't mine.My watch is yellow.
M:Is it on the sofa?
W:Yes,it is.And where are my schoolbag and model plane?
M:Your schoolbag is under the chair and your model plane is in your schoolbag.
W:Oh,thanks