问题补充：
What he had done and said
答案：
impressive是形容词,肯定不能放在这里.
what 是这个句子的形式主语,真正的主语是he had done and said ,用impress的动词形式,由于是过去时,所以要用impressed
sth.impress sb.greatly意为：某事给某人留下深刻印象
======以下答案可供参考======
供参考答案1:
impressed
something impress sb 某事给某人留下了印象
What《 he had done and said》 what是主语
供参考答案2:
填impressed（impress的过去时） 。what……said（主语从句）做主语，意思是（他的所做所言）使我们印象深刻。
供参考答案3:
impressed
整句话少了谓语成分啊What he had done and said 是主语
供参考答案4:
用impressed.
impressed
在句中作动词，主语是what引导的从句。impressive是形容词，予人深刻印象的。而impressed是动词，是impress的过去式。
供参考答案5:
impressed
What he had done and said 是主语，impressed是谓语，谓语不能使用形容词
