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Eliza remembers everything exactly as if it ______ yesterday.
A. was happening B. happens
C. had happened D. happened
which and why????
The correct answer is happened. The adverb of time yesterday requires the use of past tense.
You cannot use past perfect because it usually states:
--an action completed before a certain point in the past:
e.g.When I arrived , he had just left
or
-- an action completed in an unspecified time before a certain point in the past:
She had lost her car keys so she had to take a taxi.
or
-- in Indirect Speech:
"She left ten minutes ago"
He told me that she had left ten minutes before.
happened or had happened? 
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