[ Verb ]
Mark and John had been thinking about enrolling in photography classes.
A. Past Tense
B. Present Tense
C. Future Tense
D. Past Perfect Tense
E. Present Perfect Tense

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English MorphosyntaxPresent and Past Simple PassivePast Simple TenseCommas and Subordinating ConjunctionsFew, a few, little, a littleModals and TensesConditional Sentence 0, 1Grammar: so and suchPast ParticiplesGerunds, Infinitives and ParticiplesOther quiz:
Grammar › ViewChoose the correct alternative.
He _______ an octopus while he _______ in the sea.
#
A. saw / was swimming
B. was seeing / swam
C. see / swam
D. was saw / swim
Grammar › View
Complete the sentence.
Countable nouns always used in the
A. Sigular
B. Plural