November 7, 2006 / Vietnam became WTO's 150th memb...

Câu hỏi: November 7, 2006 / Vietnam became WTO's 150th member / after several years of preparation and negotiation.

A. On November 7, 2006, when Vietnam became WTO's 150th member for after several years of preparation and negotiation.

B. It was on November 7, 2006, Vietnam became WTO's 150th member since after several years of preparation and negotiation.

C. On November 7, 2006, Vietnam became WTO's 150th member, after several years of preparation and negotiation.

D. When November 7, 2006, Vietnam became WTO's 150th member after several years of preparation and negotiation.