Complete the exercises in section 4.

A: 1. had, 2. was driving, 3. tried, 4. crashed, 5. was trying. B: 1. went, 2. was talking, 3. arrived, 4. gave, 5. was giving, 6. ended. C: 1. tidied, 2. was tidying, tidied, 3. found, 4. was having, 5. didn't want, 6. put, 7. stored.