Question

I am having dinner at my grandmother's house(often или this evening)

Answer 1

this evening

Объяснение:

Имеется основной глагол am и вспомогательный have с окончанием -ing, что даёт понять, что данное предложение написано в Pr. Continues Tense.

Answer 2

I often have dinner at my grandmother’s house.
This evening I have dinner at my grandmothers house.

Answer 3

That sounds lovely! Having dinner at your grandmother's house can be a heartwarming experience. It's a great opportunity to spend time with family, enjoy a delicious meal, and create lasting memories. Whether it's a regular occurrence or a special evening, I'm sure you'll have a wonderful time. Cherish these moments with your grandmother and make the most of the time together.