---Why didn't you go to the party last night?---Because I was waiting for Sam in his office _______ he came back.
My uncle______ a farmer. Now he is a driver.
________the end of the story, the main character______.
My parents_______ twenty years ago. They _____for twenty years.
—Have you finished your homework ________? --Not ________. I was playing computer games.
I hope my father ________ ask me about my marks after every exam.