[ Past Tenses ]
Give an example of past perfect continuous.
A. They have been studying for three hours.
B. She was studying for three hours.
C. She had been studying for three hours.
D. He had studied for three hours.
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Grammar › ViewHe often talks to ______________________.
A. himself
B. him
C. hiself
D. he
Vocabulary › View
When she retired, she did a lot of _______ services for the Red Cross.
A. volunteers
B. voluntary
C. voluntarily
D. volunteered