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

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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。