Scientists have many theories about how the universe ________ into being.
There _____ be any difficulty about passing the road test since you have practiced a lot in the driving school.
25. I ______ have been more than six years old when the accident happened.
He _____ have completed his work; otherwise, he wouldn’t be enjoying himself by the seaside.
—Excuse me. But I want to use your computer to type a report.—You _____have my computer if you don’t take care of it .
You can’t imagine that a well-behaved gentleman _____ be so rude to a lady.