Question

i must go down to the lonely sea .(complex sentence)

Answer 1

Hey friend here is your answer

I must go down towards that lonely sea.

Hope it helps you.

Answer 2

Answer:

I must go down to the sea which is lonely.

Explanation:

The complex sentence refers to the sentence which contains at least one dependent clause and an independent clause. A dependent clause is the clause which cannot stand alone in its meaning on the other hand independent clause refers to the phrase which can stand alone, though both have a subject and a verb.