This could have worked if I ____ been more cautious.
had
have
might
would
Explanation:
Correct Answer is: had
If যুক্ত sentence এর 1st/last অংশ past perfect হলে if এর পরের অংশ would have/ Could have/ might have + past participle of verb হয়।
had
have
might
would
Correct Answer is: had
If যুক্ত sentence এর 1st/last অংশ past perfect হলে if এর পরের অংশ would have/ Could have/ might have + past participle of verb হয়।