66. If I parents I ray I exam I my I pass /1 / be I very / happy I last year /.
A. If I had passed my exam last year, my parents would have been very happy.
B. If I pass my exam, my parents would be very happy last year.
C. If I had passed my exam last year, my parents will be happy.
D. If I will pass my exam, my parents would be happy last year.
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