문제는 이렇습니다!

다음중 괄호친부분의 쓰임이다른 한개는?

ㄱ. Thanks for (telling) me
ㄴ.My hobby is (surfing) the Internet
ㄷ. It is as sure as (having) to brush your teeth
ㄹ. (Running) into problem in your life id a sure thing
ㅁ. The answer might be (waiting) for you in the morning

답은 ㅁ입니다.왤까요ㅜㅜ