He _______ economics at Harvard for almost 50 years. ...

[ Tenses ]

He _______ economics at Harvard for almost 50 years.

A. teach

B. taught

C. was teaching

D. were teaching

Select your answer:
A B C D E

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Moods of Grammar Collective Nouns Modal Verbs and Conjuctions Definite & Indefinite Pronoun & Conditionals Verbs, Tenses, and Vocabulary Progressive Verb Tenses Quantifiers / Prepositions of Time and Comparative Adjectives Past Perfect Simple & Past Perfect Continuous Present Simple and Past Continuous Reported Speech and Subjunctive

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