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Rule "Possible agreement error: plural noun + singular verb"

This is one of many errors that LanguageTool can detect.

Description: Possible agreement error: plural noun + singular verb
Message: It seems that the correct verb form here is <suggestion>are</suggestion>.
Category: Grammar (ID: GRAMMAR)
Incorrect sentences
that this rule can detect:
  • Grammatical errors is bad.
    Correction suggestion: are
Correct sentences
for comparison:
  • Writing books is hard.
  • 10 hours is a lot!
  • Ten years is a long time to wait.
  • Daylight savings is over today.
  • Insights alerts is also a much awaited feature.
  • Four miles is a good distance.
  • Hey guys there is room for everyone.
  • Private practices is the wrong word.
  • Good fruit is scarce in winter, and costs a lot.
  • However, less data is available for other dietary antioxidants, such as vitamin E, or the polyphenols.
ID: AGREEMENT_SENT_START_2 [1]
Version: 6.8-SNAPSHOT (2025-10-23 22:33:08 +0200)