it作形式主语与形式宾语 — 英语填空题
题目
完成句子（每空一词）：这句用 it 作形式主语和形式宾语改写：That the 80-year-old grandpa managed to pass the driving test surprised us, and we thought his courage admirable. → ___ surprised us ___ the 80-year-old grandpa managed to pass the driving test, and we found ___ admirable that he had such courage.