I was wearing a seat belt. If I hadn’t been wearing one, I （ ）.
（A）were injured
（B）would be injured
（C）had been injured
（D）would have been injured
David didn’t attend his daughter’s graduation ceremony, but he does wish he （ ） there.
（A）should be
（B）would be
（C）had been
（D）were
If the traffic （ ） so heavy, I could have been back by 6 o’clock.
（A）hadn’t been
（B）wasn’t
（C）couldn’t be
（D）hasn’t been
