GATE2017 CE-2: GA-1

Question

The event would have been successful if you____________able to come.

• A. are
• B. had been
• C. have been
• D. would have been

Answer 1

B. had been

"The event would have been successful if you had been able to come."

With perfect conditional we have to use "past perfect" in if.

This is Type 3 conditional statement see: https://www.ef.com/in/english-resources/english-grammar/conditional/