He failed the final examination and only then ____ how much time he had wasted.
---You look unhappy. Did you fail the tests? --- I ______ the written papers but didn’t pass the oral examination.
I’ll prepare more dishes_________ your guests decide to stay for dinner.
Large quantities of information, as well as some timely help _____ since the organization was built .
---Mary’s score on the test is the highest in her class. ---Really? She ______ have studied very hard.
George, the lonely tortoise, was said ________ on a tiny island of Pinta in 1971.