Somebody is knocking on the door .It ...be Sabina she promised to come option a) may b) must c) can't​

must

Explanation:

She must come because she promised she would come.

It's either it may be Sabrina, she promised to come or It must be Sabrina, she promised to come. The question was unclear to me

i agree, but what is the question here?

explanation:

the correct answer is:   [d]:   " espionage " .

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