In which sentence is all CAPITALIZATION correct?

Mrs. Carter, .......................... all the students liked very much, now teaches at a different university.

Will: Do you want me to fix the window? Ben: No, I'll do it.....................

Which one of the underlined words or phrases is INCORRECT? Today we are going to review some of the chapters we discuss …

Lucy saw her brother ..................... she went home during her holiday.

When you register for your new course, ...... you ask the teacher if there is room for one more student, please?