She won't go unless________.
At first the officer ______ to make a statement, but later she agreed.
All Mrs Smith's efforts to tidy the room were _____ because her grandson soon made a mess of it again.
___ is left over may be put into the refrigerator, ____ it will keep for two or three weeks.
Modern science has given clear evidence ____ smoking can lead to many diseases.
Three young men have been arrested because they were caught ___ an old lady last night.