阅读短文，用括号中所给词的适当形式填空。
One day Mr. and Mrs. White 1 (go) shopping by car. They 2 (stop) their car near a shop.
They 3 (buy ) many things from the shop and the things were very heavy. They wanted 4 (put)
the things in their car. But Mr. White couldn't open the door of the car. "Let's 5 (ask) a policeman to
help us." The policeman was very friendly 6 (help) them open the door of the car. At that time a
man 7 (come) up and shouted, "What are you doing with my car?" Mr. and Mrs. White looked
at the number of the car and then 8 (say) sorry to the man.