读短文，用所给动词的适当形式填空。
On the afternoon of May 28th, there was a car accident on Nathan Road. As a result, the road was
blocked (阻塞). The two drivers 1______ (quarrel) at that time and both of them said that the other
was wrong. However, the other drivers were not interested in 2______(know) whose fault it was; they
were waiting impatiently and just wanted to be able 3______ (leave).
Finally someone called the police. Two policemen soon arrived. They cleaned the road immediately
and tried to control (控制) the traffic.
Then the police took the two drivers to the police station. The two drivers also had 4______ (take) the alcohol (酒精) test. Fortunately, they did not drink any alcohol before 5______ (drive).
Otherwise, the result would be more serious!
的值为（）。