Complete the sentences

• aren't
• am
• are
• isn't
• is

1. They
   [ ] in room 407. They are in room 408.
2. I
   [ ] in Grade 6.
3. My textbooks
   [ ] in my school bag. Look, they're all here!
4. Kelly can't swim very well. She
   [ ] a good swimmer.
5. My younger brother
   [ ] only four years old.