• it has/had swollen
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• it is based on
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• it is known that there are ...
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• it is of vital importance
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• it is spitting
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• it is synchronized
• it is the convention to do sth.
• it is thrown up
• it is valid
• it is written that ...
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• it melts
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• it pours
• it premiered
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• it results
• it results in
• it rhymed
• it rhymes
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• it seems that ...
• it silted
• it silted up
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• it silts up
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• it smelts
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• it smolders
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• it smoulders
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• it swills
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• it tastes
• it ticked
• it ticks