一．把下列状语从句转换成--ing分词状语
1.When he came into the office,he found no one was in.
2.Because he was ill,he left the school earlier than usual.[来源:学+科+网Z+X+X+K]
3.If he passes the test,he will enter the army.
4.Although he is a little boy,he saved a girl in the river.
5.The bus was held up by the storm,so it caused the delay.