— I’m sure Andy will win the first prize in the coming English Speech Contest.— There is no doubt about it. He ________ for it for months.
5. The day breaks, _______ the birds are singing.
6. _________, I attended the meeting instead of him last week.
7. When you read the book, you’d better make a mark ______ you have questions.
8. I didn’t see your sister at the cinema. If she ______, she would have met my brother.
9. _____ all behavior is learned behavior is a basic assumption of social scientists.