You can only be sure of _____ you have at present; you cannot be sure of something _____ you might get in the future.
Because it was snowing hard, buses could _________ get through, _____did taxi appear on the street.
No dictionary can ______all the English idioms.
As a writer, she succeeded in calling ______ to many of the terrible wrongs that existed at that time.
He who is proud of his wealth has rarely _____else to be proud of.
.– She was in clas on Friday afternoon, but no one has seen her since. ---She _____ an accident.