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 Many people agree that _____ knowledge of English is ____ must in ____ international trade today.

A. /; a; the                   B. /; a; /                       C. a; a; /                      D. a; /; /

Many people agree that ____ knowledge of English is a must in _____ international trade today.

　 A. a; / 　 B. the; an

　 C. the; the 　 D. / ; the

Many people agree that _____ knowledge of English is a must in ____ international trade today. 　

A.a; / B.the; an C.the; the D./; the

Many people agree that ________ knowledge of English is a must in ________ international trade today.

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