1). be having2). has3). be had4). is having

1.	1). be having2). has3). be had4). is having
Answer» As we have used MUST before the blank, be (and not is) should follow. Also, the verb should be in –ing form (having) Thus, the WORD be having is the correct fit for the blank, MAKING OPTION 1 the correct answer. Complete Sentence - She must be having* a great time at her birthday party.*

Answer»

As we have used MUST before the blank, be (and not is) should follow. Also, the verb should be in –ing form (having)

Thus, the WORD be having is the correct fit for the blank, MAKING OPTION 1 the correct answer.

Complete Sentence - She must be having a great time at her birthday party.

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