Identify the part of speech for each of the underlined words in the reading.
He continued to dig, though very slowly, as he waited for the water truck. He didn't want to bring attention to his find, afraid that one of the other boys might try to take it from him. He tossed the rock, face down, beside his dirt pile, as if it had no special value. A short while later he saw the cloud of dirt heading across the lake.
The truck stopped and the boys lined up. They always lined up in the same order, Stanley realized, no matter who got there first. X-Ray was always at the front of the line. Then came Armpit, Squid, Zigzag, Magnet, and Zero.