1. It's your own fault,you____to bed so late. A.can't have gone B. Shouldn't have gone C.mustn't have gone D. Might not have gone 2. The car___by Karen. The keys are still on the table A. Must have taken B. Must have been taken C. Can't have been taken D. Can't have taken 3. The photos are black. The X-ray at the airport___them. A. Should have damaged B. Would have damaged C. Would damage D. Must have damaged 4. These two boys look identical. They____twins A. Must have been B. Should be C. Must be D. Should have been 5. They___a lot because they're very good musicians A. Must have forgotten B. Should have practiced C. Might have practiced D. Would have practiced