Here are the answers for each question:

1. What can he do if he **needs** extra time to finish his assignment?
2. If Lucy completes her project **on** time, she doesn't have to stay after **school**.
3. I put **reminders** on my phone to help me **remember** the last date for my papers.
4. I remember to be **optimistically** and think **positively** even when I have **a lot** of homework.