Plans have been proposed ______ the largest dam in the world to be built along the Congo river.
--- Excuse me, Miss, but may I share your table? --- Of course. ______.
--- How did you find your visit to the museum, John? --- ______
--- Excuse me, ______? --- That’s $35.76 altogether, madam.
--- Thank you for your CD-ROM. I’ll return it as soon as possible. --- ______. I’ve got another one to spare.
--- How would you like your tea? --- ______.