将下列划线部分的状语从句改成动词的分词形式 1 . When the stranger saw the door open , he entered the house. , the stranger entered the house. 2 . As Tom was athletic , he found the climb quite easy. , Tom found the climb quite easy. 3 . I ran for the bus , tripped and fell. , I tripped and fell. 4 . If we ask a question , we should get an answer. , we should get an answer. 5 . Although he lived miles away , he attended the course. , he attended the course.