[ Past Tenses ]
Although Sam spent four years studying maths, he ____ it very well.
A. wasn’t understanding
B. didn’t understood
C. didn’t understand

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Mixed Present TensesGerunds in SentencesVocabulary and IdiomsTenses - AuxiliariesSimple Present Continuous TenseDefinite ArticlesSimple Past Tense (was/were)Past, Present, FutureAdverbs of How Something is DoneGrammar : can, could and be able toOther quiz:
Grammar › ViewThey bought it, but we ___.
a. don’t
b. doesn’t
c. didn’t
Adjective ending with ED & ING › View
His behavior is so …., I can’t tolerate it anymore
A. annoyed
B. annoying