Choose the right form of the verb to complete the sentences.

__ your homework?

– No, I forgot the hometask.

a) Have you been doing... b) Have you done

b) Have you done

I __ her for a long time.

a) have known b) have been knowing

a) have known

My sister __ English for several years but she can't speak it.

a) has learnt b) has been learning

a) has learnt

My little brother __ that Santa Claus doesn't exist.

a) has just discovered b) has been just discovering

a) has just discovered

The weather is so gloomy this week. It __ for 3 days already.

And it is still raining this morning.

a) has rained b) has been raining

a) has rained

"Who __ on my chair?" asked the Little Bear when he saw that his favourite chair was broken.

a) has sat b) has been sitting

a) has sat