안녕하세요? 답변 부탁드릴께요!
혹시 몰라서 지문 전체 올립니다^^
그치만 두꺼운 글씨체만 읽으셔도 될거에요~

EBS 수능열기 (고2예비과정 외국어영역, 2009-2010년 사이의 책입니다. P.28)
Think of your life as an hourglass. The thousands of grains of sand in the top of the hourglass all pass slowly and evenly through the narrow neckon the middle, one grain of sand at a time. You and I,and everyone else are like thishourglass. When we start in the morning, there are hundreds of tasks which we feel wemust accomplish that day.
If we do not take them one at a time and let them passing through the day slowly and evenly, we are bound to break our own physicalor mental structure.

답지를 보면 let 다음이라 pass 가 나와야 한다고 합니다.

그런데 EBS 포스 영어독해의 유형(1) (P.6)
This isone kind of skill to amuse other people.There are many TV shows or contests where ordinary people can show this in front of the public.They often have others rolling with laughter.There are some celebrities who are well known especially for their distinctive features of talking and singing. People enjoy catching their unique traits of voice and showing them exactly the same way as the famous people. Also, a lot of entertainers practice this as one of their special skills to display in variety shows.

roll with laughter 배꼽을 잡고 웃다
여기서는 have 동사 뒤에 ing형태가 왔네요.
have 다음에는 동사원형이나 p,p만 올 줄 알았는데 ing도 가능한가요?