A.the; a | B.the; 不填 | C.a; the | D.a; 不填 |
A.a; the | B.the; a | C.the; the | D.a; an |
A.a, a | B.the, 不填 | C.the, a | D.不填, the |
A.The; a | B.The; an | C.An; a | D.An; an |
A.a 8-year-old | B.a-8-years-old | C.an 8-year-old | D.an 8-years-old |
A.a; The | B.an; The | C.a; An | D.an; A |
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