THE WORD THEY IN PARAGRAPH 4 REFERS TO __________. A. RARE STAMPS...

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

10. The word they in paragraph 4 refers to __________.

A. Rare stamps

B. Stamp collectors

C. Small countries

D. The prices of rare stamps