Nowadays of business letters in English.A two third writes B. two thirds is written C.

问题补充：

Nowadays of business letters in English.

A two third, writes B. two thirds, is written C. two thirds, are written

答案：

解析：

试题分析:表达分数时当分子大于一时，表示分母的序数词用复数形式。复数的三分之二还是复数，故谓语动词用复数形式。