选出相对应的答句。

①What size do you want? ____        A. Yes, she does.

②Does Lulu like rabbits?  ____         B. He's a farmer.

③What's your father do?  ____         C. Size 25, please.

④Do you have any shoes? ____         D. Yes, I am.

⑤Are you a teacher? ____          E. Yes, we do.

1×2×3×4+1=5²

2×3×4×5+1=11²

3×4×5×6+1=19²

4×5×6×7+1=29²

n（n+1）（n+2）（n+3）+1=____（n为整数）

若|m﹣2|+（$\frac{n}{3}$﹣1）²=0，试问：单项式4a²b^m+n﹣1与$\frac{1}{3}$a^2n﹣n+1b⁴是否是同类项．

比7个7多15的数是____。