In the English Grammar Profile, B2 point 58 in the category of PAST is
past perfect continuous negative.
1 HAD NOT BEEN DRINKING 180
Kankakee Daily Journal
Canfield said he had not been drinking. Canfield called 911 a third time to report the neighbor was back home.
2 HAD NOT BEEN WORKING 144
3 HAD NOT BEEN WEARING 124
4 HAD NOT BEEN TAKING 120
5 HAD N’T BEEN WORKING 108
An electrician saw his client’s house was in disrepair. So he called friends and they fixed her house for free.
“The hot water hadn’t been working for months,” he said.
6 HAD N’T BEEN PLAYING 105
7 HAD N’T BEEN WEARING 95
8 HAD NOT BEEN USING 92