Bài tập ngữ pháp tiếng Anh thì quá khứ hoàn thành tiếp diễn


    1. By the time I arrived, they for over an hour. (wait)

    2. She at that company for five years before she moved to a new job. (work)

    3. We were tired because we all day. (hike)

    4. He for the exam the whole week, so he felt well-prepared. (study)

    5. By the time the party started, they the venue for hours. (decorate)