[ Tenses ]
He _______ economics at Harvard for almost 50 years.
A. teach
B. taught
C. was teaching
D. were teaching

Random Topics:
Moods of GrammarCollective NounsModal Verbs and ConjuctionsDefinite & Indefinite Pronoun & ConditionalsVerbs, Tenses, and VocabularyProgressive Verb TensesQuantifiers / Prepositions of Time and Comparative AdjectivesPast Perfect Simple & Past Perfect ContinuousPresent Simple and Past ContinuousReported Speech and SubjunctiveOther quiz:
Idioms › View“Under your breath” means to ___.
a. whisper
b. tell a secret
c. hesitate
Grammar › View
A paragraph is
A. A serious of words on a piece of paper.
B. Something that tells you something.
C. Two to five pages long, typed and double spaced.
D. A series of sentences that have a unified thought.
E. The little yellow book with all the awnsers.
