I am not a native guy and I am having problem with the following sentence. I would like to know is the following sentence right?

The A and B are of the most important challenges facing the today world.

  • 1
    I would likely drop the of and change most important to primary.
    – user10418
    Commented Oct 18, 2019 at 11:36

1 Answer 1


There are many options:

  • A and B are the two most important challenges ...
  • A and B are the (key / primary) challenges ...

These statements are all absolute, and mean that there are no other more important "challenges ...". To soften this a bit:

  • A and B are (two of / some of / among) the (most important / key / primary) challenges ...

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