This could have worked if I ___ been more cautious.

A    had

B    have

C    might

D    would

Solution

Correct Answer: Option A

If যুক্ত sentence এর 1st/last অংশ past perfect হলে if এর পরের অংশ ১ম অংশ would have/ Could have/ night have + past participle of verb হয়।

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