Choose the correct alternative to complete the sentence ? " He _ to see us if had been able to " (10th bcs)

 Choose the correct alternative to complete the sentence ?

" He__to see us if he had been able to"

 

a) may come

b) may have come

c) would come 

d) would have come

Ans: would have come

ব্যাখ্যা : যদি if যুক্ত একটি clause এ past perfect tense  হয় তবে অন্য clause টিতে would/might/could + have + verb (past participle form) হবে।