Not all countries _________ to produce high quality product.

a) can
b) is able
c) are able
d) been

  • 1
    In Not all countries can produce high quality product, we don't include the "infinitive marker" to before the infinitive verb produce (but it is required with the semantically equivalent are able). Also note that singular product here is a "domain-specific jargon" form mainly confined to people working in marketing (and hack reporters writing about such things). The rest of us talk about plural high quality products. Feb 19, 2021 at 16:42
  • Gotcha! Please help me with this one as well. His words were very __________. A) offending B) offensive Feb 19, 2021 at 18:53

1 Answer 1


"countries" is plural, so we use "are" here.

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