Common Stumbling Blocks - Peculiar Constructions - Misused Forms.
"Don't say, These kind; those sort. Kind and sort are each singular
and require the singular pronouns this and that. In connection with
these demonstrative adjective pronouns remember that this and these
refer to what is near at hand, that and those to what is more
distant; as, this book (near me), that book (over there), these
boys (near), those boys (at a distance).
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