GrammarQuiz.Net > Tenses
He ________ for twenty years before he retired last year
A. had been teaching
B. has taught
C. was teaching
D. has been teaching
Past Continuous TenseIf vs. WhetherGood vs. Well
How to use : Read the question carefully, then select one of the answers button.
Tips : If this page always shows the same questions, make sure you correct the question first by pressing the "check answer" button.