Complete the sentences. use the where necessary. 1) sea isin north of our country. 2) where is red sea situated? 3) is one of the longest rivers in europe. 4) caspian sea is in south of russia. 5) moscow and st petersburg are famous for their museums. 6) are old mountains, they are not very high. 7) pacific ocean is in of our country. 8) lake baikal is the deepest lake in siberia. 9) tverskaya street is in the centre of moscow. 10) hyde park is in the centre of london