— Hello, I _______ to ask if I can book two tickets for tonight’s film.— Sorry, we’ve already sold out.

—I’m losing my eyesight, I’m afraid.—To finish this book, you ______ in front of your computer too long.

--- what do you think of store shopping in the future?---- Personally, I think it will exist along with home shopping but___________.

At present , the butter factory is still polluting the river though it _____to stop.

--Hi, Mary!-- Oh, it's you. Jack! I ______ you. You look like a star with the glasses.