Somebody is knocking at the door

Fill in the blank with most appropriate altenative.
Somebody is knocking at the door. I think it _____ be Radha.
(a) can
(b) must
(c) will
(d) could

Anurag Mishra Professor Asked on 16th March 2016 in English.
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1 Answer(s)

Answer: (b) must 

Anurag Mishra Professor Answered on 16th March 2016.
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