看一看你在教室的位置，数一数并回答下面的问题。

①你坐在第____横排中，从左往右数你是第____个，从右往左数你是第____个，从前往后数你是第____个，从后往前数你是第____个。

②横排数，你的左边有____个同学，右边有____个同学；竖排数，你的前面有____个同学，后面有____个同学。

Tom: Hello, Mary. Is this your pencil box?

Mary: No. It's not my pencil box. My pencil box is blue and new.

Tom: Is it Rose's pencil box?

Mary: No. Her pencil box is pink. This pencil box is green and old. What's in it?

Tom: There are four pencils, two pens, six crayons and one ruler.

Mary: Oh, I see. It is Jack's pencil box. His pencil box is lost (丢失).

Tom: OK, let's give (给) it to him.