The sentence "He'd better have seen a dentist before he lost his tooth" means :

ক. He lost his tooth because he didn't see any dentist.

খ. He lost his tooth though he saw the dentist.

গ. Despite the fact that he saw a dentist frequently, he lost his tooth.

ঘ. He was advised to see a dentist before he lost his tooth.

উত্তর: He was advised to see a dentist before he lost his tooth.

ব্যাখ্যা: He'd better দিয়ে He had better বুঝায়। Had better, should, ought to, It's time ইত্যাদি উপদেশ দেওয়া অর্থে ব্যবহার করা হয়। তাই, He was advised to see a dentist before he lost his tooth সঠিক উত্তর, বাক্যটি passive voice এ রয়েছে।

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