16. Unless / she / work / hard / enough/ pass / last examination.
A. Unless she didn’t work hard enough, she wouldn’t pass the last examination.
B. Unless she hadn’t worked hard enough, she wouldn’t have passed the last exam.
C. Unless she had worked hard enough, she wouldn’t have passed the last examination.
D. Unless she hadn’t worked hard enough, she would have passed the last examination.
Mark the letter A, B, C or D on your answer sheet to show the underlined part that needs
correction.
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