What should we keep in mind during the constant changes in the language?

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E6 Psychology Morgan King 9e Part 2 p. 37-39
E6 Psychology Baron Misra 5e Part 1 p. 257-259
Practise the full DSSSB - 29 August 2019 (Shift-1)
Attempt every question from this paper in a timed mock, then review the full solution for each one.