You can only be sure of_____you have at present;you cannot be sure of somethingyou might get in the future.

Linda, I called you this morning, but nobody answered the phone.—I’m sorry. I football with my friends then.

My son is_____a book in his room.

The subway is too because there are so many people in it.

Why do these photos look so ______?— The film was not ______ in the right way.[ ]