Shaheen would never have taken the job if _ what great demand it would make on his time .

A he knew

B he had been knowing

C he had known

D he was knowing

Correct Answer: Option C

Conditional sentence এ যদি if যুক্ত অংশটি past perfect tense এ হয়, তাহলে অপর অংশটিতে would/could/might have বসে।