填空题 下面是关于去飞机场的三对句子。每对句子中，第一句是原句，第二句是对第一句的改写。要求根据原句和第二句中已经给出的部分补全第二句。(注意，不能改变原句的意思。)

填空题 I took a bus to go to the airport.
I went to the airport 1 2.

填空题 The bus was hit by a car.
A car 1 2 the bus.

填空题 I realized I missed the flight after I finally arrived at the airport.
I 1 realize that I missed the flight 2 I finally arrived at the airport.