past perfect continuous

She ________ (teach) chemistry before she became a journalist.

• had teached

• had been teached

• had been taught

• had been teaching

I ___________ (wait) for her for hours before she came.

• had been waiting

• has been waiting

• had been waited

• had waited

When I first met Ann, she _____ (work) in Samsung for 15 years.

• had been working

• have been working

• worked

• had worked

I was very nervous while holding my speech. I ________ (never stand) in front of so many people.

• had never been standing

• had been standing never

• hadn’t been standing never

• hadn’t never been standing

I was really relieved when I found the documents. I _________ (look for) them whole morning.

• had looked for

• had been looked

• had been looked for

• had been looking for

Her eyes were red. It was obvious that she _____ (cry).

• had cried

• have cried

• had been crying

• cried

Jenny was annoyed. Jim _______ (call) her every night for the whole week!

• called

• had been calling

• has been calling

• had called

The doctor asked me how long _______ (have) the symptoms before I came to check it.

• had having

• had been had

• had been have

• had been having

We _________ (prepare) him for this race for months before he decided to quit.

• had preparing

• had prepared

• had been prepared

• had been preparing

I __________(try) to win your mother’s heart for months before she finally agreed to go out with me.

• had been tried

• had been trying

• had tried

• had trying