Present Simple or Continuous; gerund or infinitive?

I really ... this task. Could you explain it to me?

• don't understand

• 'm not understanding

Look! Our son ... a book! I can't believe it!

• is reading

• reads

I ... my waterproof jacket because it might rain later.

• 'm putting on

• put on

My brother ... live with us any more.

• doesn't live

• isn't living

... my new console? I got it for my birthday.

• Do you like

• Are you liking

... your laptop at the moment? I'd like to borrow it.

• Do you need

• Are you needing

My friends and I ... to the cinema tomorrow.

• are going

• go

This pub ... the best burgers I've ever eaten.

• serves

• is serving

Our teacher ... any homework this week because we have an important exam on Monday.

• isn't giving

• doesn't give

Sorry. I ... time now. Let's meet in the afternoon.

• don't have

• 'm not having