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5. 1. Worked

2. Know

3. Feel

4. Came

5. See

6. Write

7. Arrive

8. Like

6. 1. We didn't speak Arabic together.

2. My uncle didn't teach Science.

3. Bill didn't cook the fish.

4. I didn't take my father to the mountains.

5. We didn't tell the police everything.

6. I didn't write to my brother.

7. I didn't like the music.

8. We didn't know her phone number.

7. 1...he changed his shirt.

2...she didn't answer the others.

3...he didn't go to her house.

4...I brought some chocolates.

5...she bought a very nice dress.

6...I didn't eat the meat.

7...we didn't keep the letters.

8...they spoke German.

9...he didn't shave at weekends.