The guard ________ to his iPod, so he ________ the fire alarm. A. had listened / was not hearing B. was listening / did not hear C. listened / had not heard D. was listening / was not heari
The guard ________ to his iPod, so he ________ the fire alarm.
A. had listened / was not hearing
B. was listening / did not hear
C. listened / had not heard
D. was listening / was not hearing