Please ____ ____ here as soon as you can.
来来往往 ____ ____
又唱又跳 ____ ____
不慌不忙 ____ ____
(i)搭3个正方形要____根小棒;
(ii)搭8个正方形要____根小棒;
(iii)搭n个正方形要____根小棒.
(iv)现有2014根小棒,可以搭____个正方形.