Rewrite each sentence with the correct comma usage for subordinating conjunctions and prepositions. Use the “Check Answer” button to see mistakes and the “See Explanation” button for feedback.
1. After, the library closes, students can use the study lounge.
2. The gym is open from, 6 a.m. to 10 p.m., every day.
3. Because, the cafeteria is crowded, many students eat outside.
4. The computer lab is located in, the science building.
5. If, you need a quiet place to study, visit the library.
6. The student center is a great place for, socializing and relaxing.
7. Although, the parking lot is full, there are spaces near the dormitory.
8. The bookstore is open during, the first week of classes.
9. Unless, you have a valid ID, you cannot enter the gym.
10. The auditorium is used for, lectures and special events.