Ответ:

The mechanic is repairing a car at the moment

Ann and Lin often talk

The doctors aren't playing computer games at the moment

*что за такое предложение? доктора в данный момент не играют в комп игры не обращайте внимание, просто забавное предложение

I am serving drinks now

Is your mum painting now?

How often do your friends do homework?

Are you watching a DVD in the evening

Are children going to school now?

A taxi driving a taxi at the moment

The waiter is not eating breakfast at the moment