3-4A.抄写下面的句子this is not my umbrella.sorry.sir.is this your umbrella?No.it isnt!B Answer these questions.B.模仿例句回答以下问题。Example:Is this your umbrella?No.It isnt my umbrella. Its your umbrella.1 Is this your pen?2 Is this your pencil?3 Is this your book?4 Is this your watch?5 Is this your coat?6 Is this your dress?7 Is this your skirt?8 Is this your shirt?9 Is this your car?10 Is this your house?This is not my umbrella.Sorry sir.Is this your u