IDNLearn.com: Where your questions meet expert advice and community support. Discover reliable and timely information on any topic from our network of experienced professionals.
Answer:
I'm only having a guess here:
Two, empty, and several.
Explanation:
"Two"
describing how many bulldozers there are
"Empty"
describing the parking lot
"Several"
describing how many weeks the bulldozers have been in the parking lot for