Exercise 17.2: The correct auxiliary - past.

Fill in the blank with did, had, was or were.

Example: What ____ he doing at the time?
Answer: What was he doing at the time?

1. He ____ been told to take the truck back to the office.

2. Another crew ____ waiting to pick it up.

3. I ____ not see him drive by yet.

4. The managers ____ waiting for him for hours.

5. He ____ not arrive until after dark.

Unit 17