1.My
watch has stoppedThere is something wrong with it.2.Have you seen Jack today? - Yes , I saw him at the institute.9.Have you heard the
new symphony by M.? - Yes , I have -When did you hear it? - I heard
it last Sunday.3.You have changed so much.Has anything happened? 4.What
are you doing here at such a late hour? Are you writing your composition? -
No , I have written it already.I am working at my report.- And when did you write you composition? - I finished it two days ago. 5.I say ,
Tom , let`s have dinner.-No , thank you , I have already had
dinner . 6.What is the weather like? Is it still raining - No , it has stopped raining. 7.She left the room a moment ago. 8.We have not yet solved the problem. 9.When did it all happen? 10.The morning was cold
and rainy , but since ten o`clock the weather has changed and now the
sun is shining brightly. 11.Show me the dress which you have made. Oh ,
how dark it is! A large black cloud has covered the sky.I think it will
start raining in a few minutes.12.Oh , close the window! Look , all my
papers have fallen on the floor because of the wind.13.When did you open
the window! - I opened it ten minutes ago.14.What has happened? Why
are you crying? Have you hurt yourself? '' I asked.15.As soon as I saw him , I understood that he was working hard.He was writing)
something and did not notice anything.16.When I came home
yesterday, the children were running and singing merrily.''We have learnt a
new song!" they cried.17.When the young man entered the room , she looked at him in surprise.