Elise remembers many things exactly as if it ______ yesterday.
A．was happeningB．happensC．has happenedD．happened
D
as if意為“好像，仿佛”，所引導(dǎo)的從句如果表示真實情況，謂語動詞用陳述語氣。如果表示非真實情況，謂語動詞用虛擬語氣。因為Elise所能想起的事都發(fā)生在過去，而不是發(fā)生在昨天，是非真實情況，所以要用虛擬語氣。
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