1)i like to swim in the ... . the water in the black ... is warm in summer
2) he knows the names of the fourr ...
3)last summer the browns lived near the ...
4)will you go to the ... next summer?

I like to swim in the sea. The water in the Black  Sea is warm in summer/He knows the names of the  four seas.Last summer the Browns lived near the sea.Will you go to the sea next summer.