I turned round and saw it----(是）Liu Mei.这里是填was还是is呢?

was !前面turned是过去式可是saw后面不是跟原形吗？Thursday Rine This afternoon, when I walked out of the school, the weather changed.Dark clouds were gathering.I began to feel worried because I didn't have either my raincoat or my umbrella with me. It soon started to rain.Just as I was hurrying home, I heard someone calling me from behind.I turned round and saw it was Li ping. 最后一句话