[ Past Perfect and Past Perfect Continuous Tense ]
Which of these is not past perfect continuous tense?
A. I had been helping him to do the task before I started the program.
B. Richard had been practicing to sing the song since morning
C. We had been enjoying the program thoroughly for three hours.
D. They had been to London

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A. seeing
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to annoy, upset, or hurt another person
A. spitefully
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