Put the numerals in a written form. 1.the thames is the longest river in england it is kilometres long. 2. the lena is the longest river in russia, it is 4,400 3.ben nevis is the highest mountain in the uk, it is 1, metres high. 4.elbrus is the highers mountain in russia, it is 5, metres high. 5. lake loch ness is the deepest lake in thr uk,it is metres deep.