I’m not sure whether we can gain any profit from the（invest) ___________.

I’m not sure whether I can gain any profit from th

I’m not sure whether I can gain any profit

We can address a lady “Ms” if we are not sure if she’s married or not.（)

【D8】JOSE: PAMELA, CAN YOU COME TO A MEETING ON FRIDAY？ PAMELA: I"M NOT SURE.【D8】______WHE

【D9】JOSE: PAMELA, CAN YOU COME TO A MEETING ON FRIDAY？ PAMELA: I"M NOT SURE.【D8】______WHE

【D10】JOSE: PAMELA, CAN YOU COME TO A MEETING ON FRIDAY？ PAMELA: I"M NOT SURE.【D8】______WH