按一定规律排列的一列数:21,22,23,25,28,213,…,若x,y,z表示这列数中的连续三个数,则x、y、z满足的关系式是( )
Look!The bear under the tree.
The soldiers ____ ____ to receive clear orders on what to do next.
Last week, Vivian a dress for her mother with her first-month salary.