sit的過去式怎么寫

　　This is the first time I've sat behind the wheel since the accident.

　　這是出車禍以來我頭一次坐在方向盤前。

　　She sat outside, waiting to find out her fate.

　　她坐在外面，等待命運對她作出的安排。

　　I sat down for a moment to gather my strength.

　　我坐下片刻積蓄力量。

　　They sat down to consider the problem.

　　他們坐下來考慮這一問題。

　　She sat for hours together just staring into space.

　　她連續幾個小時坐在那里怔怔地望著前面。