Present Simple vs Present Continuous

I'm sorry, but I can't come and meet you right now. I ______ (have) lunch with Becky.

You look sad. What ______ (think) about?

What ______ (think) of my new shirt?

Kim ______ (not know) how to use her new camera - probably because she hasn't read the instructiona.

She ______ (have) four diferent pairs of trainers.

I ______ (not believe) you, Hannah. You've lied about this so many times.

Ben ______ (need) to see a doctor about his cough.

Ian ______ (dance) with Kelly at the moment.

Every time I see you, you ______ (look) completely different. I love your new hairstyle!

This coffee ______ (taste) really strange.