[...] tonnes of rubbish are being accumulated and the lack of space for (IT/THEM) is becoming a complex problem.

Should it be IT or THEM? And why?

marked as duplicate by user3169, StoneyB, Glorfindel, M.A.R., JavaLatte Apr 14 '17 at 12:30

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  • 3
    In general, you should include the complete sentence or paragraph for complete context. – Em. Apr 13 '17 at 19:28
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    it (the antecedent is "rubbish") would be fine unless you were talking specifically about a tonnage limit. Also, consider are accumulating as an alternative to are being accumulated. – Tᴚoɯɐuo Apr 13 '17 at 20:44