분사와 동명사를 구분하는 문제입니다.
이해하기 쉽게 설명 부탁드리겠습니다. 감사합니다.※ 다음 밑줄 친 부분의 쓰임이 다른 것은?

1. ① he was teaching english.
② she stand singing a song.
③ he is a sleeping boy.
④ his job is teaching english.
⑤ you have a flying bird.

2. ① speaking english is hard.
② i liked listening to music.
③ would you mind opening the window?
④ anna is in the waiting room.
⑤ i know a girl looking at him.

3. ① i have a sleeping bag.
② the show is very exciting.
③ she gave up studying english.
④ he was waiting in the smoking room.
⑤ his hobby is walking a street.