Answers:
1. They don’t have to listen to you!
2. If he hadn’t gone out, we would have been able to play cards together.
3. You shouldn’t watch too much TV.
4. You mustn’t use your phone during the test or you will be expelled.
5. We ought to pay attention in class.
6. I will write back to you as soon as I have received your email.
7. If only it were sunny, we could go out.
8. If they had arrived earlier, we would have had enough time to go to the swimming pool.
9. You don’t have to bring anything to the party. We have everything we need.
10. I wish it wasn’t so cold.
11. If he stays with us, I won’t go to the cinema.
12. I would go out more if I didn’t have so much work.
By the way, most of these are informal speech!
Jim and I go to the gym three times a week.
This one: "Lee noticed a problem and alerts a teacher".
The second verb should not have been changed to present tense.
You should change the verb alert to past tense: "Lee noticed a problem and alerted a teacher".
The answer would be C because the narrator is not an active person in the story.
