Column A
1. I could _____ that myself, but you didn't ask.2. You shouldn't _____ without lights.3. When should they _____?4. You might _____ an accident!5. While you're relaxing, I'll _____ hard.
Column B
A. have been drivingB. be arrivingC. have doneD. be workingE. have had
Answer: 1: 2: 3: 4: 5:
Unit 27
