Change the sentences using Complex Subject: 1. It is known that spring and autumn are those seasons when the patients with ulcer suffer from the recurrence of the disease.
2. It is considered that constant fatigue, the lesions of the nervous system and past diseases contribute to the onset of gastritis.
3. It appeared that the characteristic clinical manifestations of the disease were haemorrhage, vomiting and nausea.

  i would like to tell you a little bit about the famous statue of pushkin in the center of moscow. it is one of my favourite sculptures in the city, as it‘s dedicated to the brilliant russian poet and writer – alexander sergeevich pushkin. it was set up at pushkinskaya square on june 6th, 1880 to commemorate the writer’s birthday. in 1950 it was moved to the opposite side of the square, where it rests until present days. the monument is made of bronze and is about 11 meters tall. the poet is wearing a frock and a long coat over it. he is captured in thoughtful mood. it seems that he is working on another large composition. there are four cast-iron lanterns in the corners of the monument. the base is decorated with lines from his poem, called “monument”. the surrounding square is also charming. it’s like a small oasis in the middle of busy moscow. right in front of the statue there is a beautiful fountain and a number of flowerbeds. i like visiting this place, especially in summer. the breeze from the fountain cools down the air and it feels good to sit on one of the little benches in vicinity. it helps me to relax and forget about the time. я хотел бы рассказать вам немного о знаменитой статуе пушкина в центре москвы. это одна из моих любимых скульптур в городе, так как она посвящена гениальному поэту и писателю – александру сергеевичу пушкину. она была возведена на пушкинской площади 6 июня 1880 года в честь дня рождения писателя. в 1950 году ее переместили на противоположную сторону площади, где она стоит и по сей день. памятник выполнен из бронзы и составляет около 11 метров в высоту. поэт одет в сюртук, поверх которого длинный плащ. он запечатлен в раздумье. кажется, что он работает над своим очередным крупным произведением. по углам от памятника расположены четыре чугунных фонаря. основание украшено строкой из его стихотворения под названием «памятник». окрестная площадь не менее очаровательна. это как маленький оазис посередине оживленной москвы. прямо перед статуей расположился красивый фонтан и многочисленные клумбы. мне нравится бывать здесь, особенно летом. легкий бриз от фонтана охлаждает воздух и хочется присесть на одну из маленьких скамеек поблизости. это мне расслабиться и забыть о времени.

Dr. brown: dr. ivanov, would you kindly tell us what facilities your doctors have for specialization? dean: interns and residents work under the direct supervision of experienced specialists in clinics and in major hospitals. medical graduates can also apply for the post-graduate training. for three years postgraduates do research into one of the important problems of modern medicine, prepare a thesis, defend it, and obtain an academic degree of candidate of medical science.dr. conroy: dr. ivanov, thank you very much for the talk. dean: you are most welcome. if you like, i'll gladly show you through some of our clinical hospitals and departments. dr. brown: we'd be much obliged to you