Question

Use the Present Continuous or the Present Perfect Continuous.
1. What ________ you (to look)______at?-I(to look)______________________at the picture over there.I(to look)_____________at it for almost half an hour and I still can't understand that it is .
2.What ________Mary(to do)_____________?She (to practice)________________the piano.She(to play)____________since 12 o'clock.I think she must have a rest.
3.Here you are at last!I(to look)____________________for you everywhere.
4.Why__________you(to smile)____________Robert?-I(to watch)____________________your kitten.What a playful little thing it is!
5.I see you(to write)_________________________letters al the morning.Is it the last letter you(to write)_________________________now?

Answer 1

1. are you looking , i'm looking , you have been looking 
2.is Mary doing , is practising, has been playing
3. have been looking 
4. are you smiling , i'm watching
5. have been writing , are writing