_ that you were prepared for the test, they_ you.

A Would the authorities know/would contacted
B Did the authorities know/will have contact
C Had the authorities known/would have contacted
D Were the authorities knew/could contact

Correct Answer: Had the authorities known/would have contacted

3rd conditional:If clause fo past perfect 4 main clause fo subject + টি would/could/ might + have + V3+ ext(i) If+Subject + had + V3, Subject+would/could/ might+have+V3+ ext Example: If I had known Rifat was coming I would have gone to the station. (ii)Had + subject+ Vs, subject + would/could/might +have+V3+ ext.Example: Had I been in your situation, I would have accepted the offer.
Bissoy MCQ

Related Questions

Computer records_ that they_ us before the product was shipped. (Choose the appropriate option to complete the sentence)
Ten new television shows appeared during the month of September. Five of the shows were sitcoms, three were hour-long dramas, and two were news-magazine shows. By January, only seven of these new shows were still on the air. Five of the shows that remained were sitcoms.

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