Answer Key
Exercise
Fill in the missing words...
- Jack wasn't [able to] explain why it happened.
- I [should] have gone home. I know. Why didn't I go home?
- Jenny [shouldn't, should not] have left so early. That was a big mistake.
- They should [have] finished before midnight.
- The secretary was [allowed] to make some decisions for the department.
- [Were] you allowed to enter the house after the police left?
- I shouldn't [have] come so late.
- John isn't able [to] do two things at the same time.
- Nobody [was] allowed to move. The terrorist threatened to start shooting.
- [Were] they able to find out what the problem was?