---Dad, I'm confused what I am going to do after graduation. ---You'd better first explore your talents and get to know yourself so as to find out __________ your real interests lie.
Bill suggested ______ a meeting on what to do for the Shanghai Expo during the vacation.
I still remember ______ to the Famen Temple and what I saw there.
Planning so far ahead _____ no sense — so many things will have changed by next year.
—Is everyone here? —Not yet ... Look, there _____ the rest of our guests!
Listening to loud music at rock concerts _____ caused hearing loss in some teenagers.