Надо раскрыть скобки в present simple или present kontinuous.
And i've called because i (1) (want) to invite you to my son's party. We (2) (celebrate) his graduation.
It (3) (sound) fun, but i (4) (stay) at work till late tonight.
You (5) (always/leave) the office late!
But, anyway, what time (6) (the party/start)?
(7) (you/ come)?
Well, i (8) (think) of coming for an hour or so and then doing some work at home.