All Perfect Tenses 1

She (a)   (already / leave) when I arrived.

By next year, they (a)   (graduate)

We (a)   (work) on this project for two hours.

He (a)   (study) all night by the time I saw him.

By the end of the year, she (a)   (teach) for ten years.

She (a)   (write) five novels in her career, and her latest one has garnered critical acclaim.

Over the years, I (a)   (visit) many countries, each time gaining a deeper understanding of different cultures.

He (a)   (finish) reading the book before the movie adaptation was released.

They (a)   (complete) the construction of their new house by next summer.

By the time I called, they (a)   (wait) for over an hour.