Choose the correct answer and complete the sentences:

1. When I first met Ann, she __________ (work) in Samsung for 15 years.
worked
had been working
had worked
have been working
2. I was really relieved when I found the documents. I _________ (look for) them whole morning.
had been looked for
had been looked
had looked for
had been looking for

3. I was very nervous while holding my speech. I ________ (never stand) in front of so many people.
had been standing never
hadn’t never been standing
had never been standing
hadn’t been standing never

4. She ________ (teach) chemistry before she became a journalist.
had been taught
had been teached
had been teaching
had teached

5. I ________ (wait) here for hour last Monday before the bus came.
had been waiting
was waiting
had waited
have been waiting

6. I was very nervous while holding my speech. I ________ (never stand) in front of so many people.
hadn’t never been standing
had been standing never
had never been standing
hadn’t been standing never

7. I was really relieved when I found the documents. I _________ (look for)
them whole morning.
had been looked
had been looking for
had been looked for
had looked for

8. She was very tired. She _____ (type) letters all day long.
has been typing
had typed
has typed
had been typing