The line is busy; someone "should be using" the telephone now. (Match the best alternative that correspond to the quotations word)

A must be using
B should be using
C must have used
D should have used

Correct Answer: must be using

প্রশ্ন : The line is busy; someone should be using the telephone now. উত্তর: must be using. বর্ণনা : যেহেতু the line is busy অর্থাৎ লাইনটি ব্যস্ত , তাই কেউ(someone) এখন অবশ্যই(must)telephone টি ব্যবহার করছে। তাই ক সঠিক উত্তর ।
Bissoy MCQ

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