Answer: D Analysis: Before the space is a complete sentence structure, (B) (C) are predicate verb, but there is no clause guide words, so excluded. (A) is the infinitive phrase, it can be used as adverbial, but does not, and the title was intended. (D) for the present participle, modified river water, in line with the meaning of problems. TEXT: Marine sustained losses due to evaporation which flows into the river.
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