过去完成时的一些问题,请看一些句子① it__(rain)earlier that morning and the ro

过去完成时的一些问题,请看一些句子① it__(rain)earlier that morning and the roads were still wet.
像这句话中rain需要用过去式还是过去完成时?
②She __(be) on the road for about half an hour when suddenly she saw a warning sign for a sharp bend .By this time ,it __(start) raining again and the roads were slippery.这句话的be.start需要用哪个时态,
题目可能具有难度,请大家尽力而为,