情景交际：补全对话，每空一词。 A: Good morning. Are you Tom? The new exchange student __1__ the US? B: Yes, I am. A: __2__ to our school. May I ask you __3__ questions? B: Sure. A: Have you ever __4__ to China before? B: No, __5__ . A: __6__ do you want to come to China and study here? B: Because my parents are __7__ here, so I have to move here. A: I see. Did you know anything about China before you __8__ here? B: Not really. But my parents once told me __9__ about  China. I think l want to know something __ 10 __. So I came here this August.