Flight BA 123 to Vienna is now boarding at
A. Gate 21 B. 21St Gate C. the Gate 21 D. 21 Gate
Flight BA 123 to Vienna is now boarding at
A. Gate 21 B. 21St Gate C. the Gate 21 D. 21 Gate
A
本题是名词和数词的考查。数词放在名词前用序数词，放在名词后面用基数词。