A.a, the | B./, a | C.the, a | D.a, / |
A.A; / | B.A; the | C.The;/ | D.The; a |
A.the; / | B./; the | C.the; a | D.an; the |
A.a; the | B.a; 不填 | C.the; a | D.不填; the |
A. the; an | B.不填; an | C. a; an | D.不填; the |
A. /; a | B. the; a | C. a; a | D. /; / |
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