问题补充：
The woman teacher together with her studentsgoing there.
A. are;by foot
B. is;on foot
C. are;by feet
D. is;on feet
答案：
A. are;by foot
(答案→)B. is;on foot
C. are;by feet
D. is;on feet
解析：这位女老师，还有他的学生们打算步行去那儿。本句中together with her students为伴随主语，真正主语是The woman teacher，故谓语动词用单数。步行是on foot，故选B。
