Playing on the football pitch .A. some students are with their P.E. teacherB. their P. E.

问题补充：

Playing on the football pitch .

A. some students are with their P.E. teacher

B. their P. E. teacher is with some students

C. some students with their P. E. teacher are

D. are some students with their P. E. teacher

答案：

A. some students are with their P.E. teacher

B. their P. E. teacher is with some students

C. some students with their P. E. teacher are

(答案→)D. are some students with their P. E. teacher

解析：考查倒装句：这句话是现在分词提前，句子用完全倒装，be动词或谓语动词提到主语前面，主语是some students with their P. E. teacher，在操场山玩的是一些学生和他们的体育老师，选D。