English Skills 10th Edition by John Langan, Zoe Albright

تمرين 101

In the passage below, one verb must be changed so that it agrees in tense with the other verbs. Cross out the incorrect verb, and write the correct form above each crossed-out verb.
Smashed cars, ambulances, and police cars blocked traffic on one side of the highway. On the other side, traffic slows down as drivers looked to see what had happened.