Which of these sentences is in the present perfect? (1)he has a lot of friends. (2)have you got any money? (3)i'd like to visit paris some day. (4)have you spent your holiday at home? (5)they bought this house a year ago.

Это предложение № 1, 2, 4. 

1. a promising n ew drug has been discovered by our r & d departmen . 2. the inflation rate was gone down by 0.5% last month. 3. this line was created by o ne of our best young designers. 4. i‟m sorry, that can`t be done by us . 5. very interesting happened to me last week. 6.  more than a million dollars is being spent on advertising this year by us. 7.  this payment may not be authorized by the accounts department. 8. worked as a consultant for four years after my mba. 9. the problem is being investigated by them.

carol chadbond leant on the counter by the till, chewing gum, and gazed at the customers in the shoe shop. there were only two: a young girl and her mother. they had been  a21  trying  on  (примеряя)shoes for twenty minutes, unable to agree on anything. the girl wanted something expensive and fashionable,  a22  while( в то время как)  the mother wanted something cheap and practical. carol watched them argue and thought how bored she was.she wished she hadn't agreed to stand in for julie on a saturday morning. she could be out with her friends now, drinking coffee and gossiping instead of waiting for people to  a23  make(решат)  their  minds up  . the mother came over with a shoe in her hand.'i wonder if you have this in a size 4,' she said. carol took the shoe and smiled the automatic smile she  a24  reserved (берегла), for customers.i’ll go and have a look. won't be a minute,' she said and went into the storeroom. she quickly found the shoes, then sat on a stool, hoping to waste a few minutes by  a25  pretending  (притворяясь)to look for the shoes. she thought about her plans for that evening. she was looking forward to going to the cinema and seeing her favourite actor's latest film. realising that she hadn't invited amy, she got out her mobile and quickly dialled the number. it rang twice before amy answered.'hi, it's me! ' carol said. 'guess what? i'm at work. listen, what are you doing later? 'soon, amy was telling carol all about what had happened the night before and who had said what to whom. forgetting where she was, carol got more and more  a26  involved (все больше увлеклась)in  the  conversation, crying 'really? ' and 'i don't believe it! ' at the more interesting moments in the story. a low cough came from the door of the storeroom. carol looked up to see the woman customer standing there with a very annoyed  a27  look(выражением)  on her face. even worse, the shop manager, mrs lewis, was standing right behind her.'erm i'll call you back,' carol said into the phone, and  hung  a28  up (положила трубку(закончила somehow, she had the feeling that she might not have to work the following saturday morning.