PHILATELIC KNOWLEDGE IS ESPECIALLY IMPORTANT FOR THOSE WHO ______...

19. - File thứ 1: Anh 11 giua ky 2 19. - File thứ 1: Anh 11 giua ky 2
Tiếng Anh File thứ 1: Anh 11 giua ky 2

19. Philatelic knowledge is especially important for those who _________.

A. intend to spend large amounts for stamps.

B. haven't observed the generally rising prices of stamps.

C. have observed the generally low prices of stamps.

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D. have observed the generally rising prices of stamps.