stand的过去式形式怎么写

Students stood around in groups waiting for their results.

学生们成群地站在周围等待成绩。

We stayed in a village where time has stood still.

我们待在一个时间似乎凝滞了的'村子里。

He stood still, absorbing every detail of the street.

他一动不动地站着，不放过街上的每一细微之处。

Without speaking, she stood up and went out.

她没有说话，站起身来走了出去。

The children all stood in a line.

孩子们全都站成一排。