1) You **are not writing** now, are you? Can I have your pen for a minute?
2) I **am watching** the film now, don't bother me!
3) **Are you doing** your homework? - No, I **am writing** a letter to my friend.
4) What **are you thinking** about? - About my holidays.
5) She **is not playing**, she **is working**.
**Объяснение:**
Present Continuous (настоящее продолженное время) используется для описания действий, происходящих в данный момент. Формула: to be (am, is, are) + verb + -ing.