There are ... — 英语情景题

放学后，Sam 和 Tom 在教室里整理文具。请选择合适的句子补全对话（把序号填在横线上）。A. There are eight pencils in it. B. How many pencils are there in your pencil box? C. One, two, three ... only six! D. Look! There are two pencils under the desk. So there are eight. Sam: Let's put away the pencils, Tom. Tom: OK. (1)________ Sam: (2)________ Tom: (3)________ Sam: Wait! (4)________ Tom: Great! Now let's count them all together.