Which phrase refers to a future meeting?

Which of the following is wrong?

I work every day _______ Sundays.

I'm going to call ____ secretary to set up an appointment.

She ___ busy now.

What does COO stand for?

In professional academic circles, an extended career break to travel or work on personal goals, often offered in contracts as a paid benefit, is called:

Is this sentence correct? The dog chased it's tail.

________ are necessary aspects of organizations of any significant size.

What does KPI refer to in regards to business reporting?

R.S.V.P at the end of an invitation means