[ Passive and Active Voice ]
They built this temple 3,000 years ago. This must ________ a great civilization.
a. have been
b. was
c. not have been
d. has been
Select your answer:
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Adverb & Compound SentencesVocabulary & GrammarPresent and Past Simple PassiveGrammar - Reflexive PronounsPrepositionsAdverbial Concession ClausesIndefinite PronounsTenses (Present, Past, Future Forms)Tenses and QuestionsPrepositions and ArticlesOther quiz:
Grammar › View The thought of his family is what kept the injured man alive.
A. Subject
B. Direct object
C. Predicate nominative
D. Indirect object
Verb Tenses › View
If you want to describe something happening at this very moment, which tense do you use?
A. Simple present
B. Present continuous
C. Simple past
D. Past continuous