Question

.I ______ an appointment with the dentist soon.​

Answer 1

Answer:

I will have an appointment with the dentist soon.

Explanation:

Because,it is in the (Perfect Tenses) grammer:-

[Future perfect]

Answer 2

Answer:

I have / will have an appointment with the dentist soon .

Explanation:

The pronoun ' I ' is either followed by the actual form of a verb or by an auxiliary verb which maybe or may not be followed by a main verb . I can be followed by only ' am ' have ' and ' had ' . In this case , only have or will have suits the blank .