my grandmot how to use a computer before she retired Exercise 7.Put the verbs in brackets into the simple past or past perfect tense. 1. After the stewardesses had served lunch to the passengers, they (sit)down. 2. We corrected out papers after we 3. After John (take) the quiz. (wash) his clothes, he began to study. 4. Maria (enter) the university after she had graduated from the community college. 5. The policeman read the suspect his rights after he (arrest) him. 6. George 7. Laura (wait) for one hour before the bus came. (wash) the pipettes ((n): ống nghiệm) after she had completed the experimen 8. Jane sent a letter to her university after she (receive) her scholarship check. (flip: (v): Đập nhẹ) ten times before it landed on its roof. (live) in Miami for one year when his parents came to visit. 9. The car 10. John