Many people agree that _________ knowledge of English is ________ must in international trade today.
A.a; the | B.不填;不填 |
C.a; 不填 | D.a; a |
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Many people agree that _________ knowledge of English is ________ must in international trade today.
A.a; the | B.不填;不填 |
C.a; 不填 | D.a; a |