Each student and each teacher is required to sign____ .Each student and each teacher is required to sign________.A his name B their names

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Each student and each teacher is required to sign____ .
Each student and each teacher is required to sign________.
A his name B their names

A,在这种情况下用单数形式,所以前面的动词也是单数形式

选a

A.谓语动词是is则选A

每一个学生和每一个老师有必要去签____
A他的名字 B他们的名字
应该选A 因为是each表示单数

A