Let’s go to ______ cinema—that will take your mind off the problem for while.
If you ______ earlier, you ________ him.
Great changes __________ in our hometown in the past twenty years..
John, look at the time. ________ you play the piano at such a late hour?
He looked as though he _________ a ghost(鬼).
He stood for an instant with his hand still ___________.