Did the boys feel tired so they put out the fire and crept into the tent?
felt 为 feel 的过去式,变一般疑问句：Did + 主语 + 动词原形 + 其他
and 引导的并列句,所以他们扑灭火,钻进了帐篷.They put out the fire and crept into the tent.这个句子算是一个连动谓语句子还是并列的两个句子后者省略了相同主语？连动谓语句，同一个句子，主语 they， and 引导两个动词