As is known to us all, _________ tiger is in _________ danger of becoming extinct.
A.the, a | B.the, 不填 | C.a,不填 | D.不填,the |
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As is known to us all, _________ tiger is in _________ danger of becoming extinct.
A.the, a | B.the, 不填 | C.a,不填 | D.不填,the |