Final answer:
The sentence filled in with the present tense is 'Do you not invite me to your birthday party?', where 'Do' is the auxiliary verb and 'invite' is the base form of the verb 'invite'.
Step-by-step explanation:
The correct way to fill in the blanks with the present tense in the given sentence is as follows: 'Do you not invite me to your birthday party?'.
In this sentence, 'Do' is the auxiliary verb used in the present tense for interrogative sentences, and 'invite' is the base form or the present tense of the verb 'invite', which is used after the auxiliary verb 'do'.
Learn more about Present Tense here: