1. was ( Chủ ngữ I ⇒ was)
2. were (Chủ ngữ You ⇒ were)
3. was (Chủ ngữ She ⇒ was)
4. was (Chủ ngữ He ⇒ was)
5. was (Chủ ngữ It ⇒ was)
6. were (Chủ ngữ We ⇒ were)
7. were (Chủ ngữ You ⇒ were)
8. were (Chủ ngữ They ⇒ were)
9. was (Chủ ngữ The cat ⇒ was)
10. were (Chủ ngữ The children ⇒ were)