1.You should use present perfect or present perfect progressive

1. John looks tied, we think he ( do) his homework.
2. Their university ( study) ecological problems for many years.
3. A lot of trees are lying on the ground. It seems to me a very strong wind ( blow)
4. I’m very sorry that I (break) your cup.
5. He (know) us for many years
2.Find out the time of these sentences present perfect or present perfect progressive

1. It has been raining all day. When will it stop?
2. It is noon. You have been working on the computer for two hours already
3. We have never been to Australia. And John has been living there all his life.
4. She says she has never spoken to any famous traveller.
5. Nancy has travelled in Canada this year.

Text for переводаесли you put in country pool, it appears very quickly, that to save in him water more fresh, to protect from greenery, very difficult! to water in a pool nothing is done week-one and a half, and then water deteriorates usually, house-dogs-spiders are led, though remains yet with week more or less transparent, nevertheless she already not very fresh. it is possible to chlorinate, but, on reviews, even chlorinating of water not very rescues water from that she deteriorates.it is possible to salt water - excellent water turns out, if on 10 т of water to pour out about 50 kg of salt and kg 5 sodas is she even the slightly salt appears to the taste. what it is good to salt water - so it that in midges are not led not then, mosquitoes do not propagate, and birds do not fly. this excellent means, only defect - conveying salt is needed.well and from becoming green salt with a soda water is not rescued, other facilities are needed. especially in a heat.септик is needed necessarily - he helps longer to protect water from greenery.in summer in a heat without disinfectant

Justin drew bieber was born in stratford, ontario, canada on march, 1, 1994. justin began singing several years ago. when he was 2, he showed his interest to music and instruments, especially drums. today he plays the guitar very well. he is good at sports, too: basketball, football, golf, hockey and skateboarding. by the way, he is left-handed. at school he liked maths most of all. 2007 was a start for a young singer. he sang and shot hits of well-known singers on a videocamera and loaded his clips on youtube. soon admirers appeared. they were sure justin would become a star. scooter brown watched his clips and sent justin to usher, atlanta. there justin met justin timberlake and signed a cotract with usher and later record company. justin is one of the most talented american children. on christmas he performed for us president barac obama and his wife michel obama. his dreams are to develop musical abilities, graduate from the college and sing with beyonce and lady gaga. besides, he thinks of hollywood. перевод: джастин дрю бибер родился в стратфорде, провинция онтарио, канада 1 марта, 1994. джастин начал петь несколько лет назад. когда ему было 2 года, он тогда проявлял интерес к музыке и музыкальным инструментам, особенно ударным. сегодня он хорошо играет на гитаре. он дружит также со спортом: играет в баскетбол, футбол, гольф, хоккей и занимается сноубордингом. кстати, он - левша. в школе ему больше всего нравилась . 2007 год стал стартом молодого певца. он спел и снял на видеокамеру хиты известных звезд, и выложил их в интернете на youtube. вскоре у него появились поклонники. они были уверены, что джастин станет звездой. скутер браун увидел его клипы и отправил джастина к ашеру, в атланту. там джастин познакомился с джастином тимберлейком и подписал контракт с ашером, а позднее - со звукозаписывающей компанией. джастин - один из самых талантливых детей америки. в рождество он выступил перед президентом сша бараком обамой и его женой мишель обама. его мечты - развивать свои музыкальные способности, окончить колледж и спеть с бейонс и леди гагой. кроме того, он подумывает о голливуде..