III. Insert the prepositions of, by, in, to into these sentences. 1. The UK is located ... the north-west ... Europe.
2. The UK consists ... four parts.
3. St Helena and Falkland islands are also linked ... the UK but aren't a part ... it.
4. Wales is a country that lies ... the west ... England, and shares a border with it.
5. The city centre is located ... a place which is picturesquely surrounded ...
seven hills.
6. The Palace ... Holyrood House, founded ... James IV around 1500.​

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1. Some helping in exchange of information is provided by scientific conferences.
2. He demonstrates some insisting on addressing this issue.
3. Being engaged in collecting material for a new article is my occupation now.
4. Arising of this error from the use of approximate methods occurs
often.
5. Aiming at obtaining accurate data on this issue - that is what the efforts of many scientists are focused on.
6. In this connection, other studies in this field are worth mentioning.
7. In this article, suggesting the usage of the same principle when considering more complex systems is done by the author.
8. Preventing a new series of experiments from being conducted  is caused by the lack of accurate data.
9. Trying to answer this question has been performed by scientists for a long time.
10.  The reason for some differing in providing more accurate data lies in this method.