句型What is it? It's a... — 英语情景题

Sam 和 Lily 在农场参加“神秘动物”活动。根据情景补全对话，每空一词。 Sam: Welcome to my farm, Lily! Close your eyes and listen. Lily: OK... Woof, woof! (1)________ it? Sam: Good question! It has four legs and a long tail. Lily: Is it a wolf? Sam: No, it isn't. It is our family friend and it can watch the house. Lily: Oh, I know! (2)________ a dog! Sam: Yes! Open your eyes and say hello to Coco.