B.
Word-order:
1.the President / According / the head / the Constitution /is/ the state / to / of /.
2.crosses/is/of/The British/made/three/flag/up.
3.on / the Thames/is/ the banks / London/of/ situated/.
4.our / the scientific / centre / Kyiv / country /is/ and / of cultural.
5.of/Motherland / are/ their / Ukrainians / proud/.
6.divided / branches / State / into / power / three /is/.