问题详情：
― Can those ____ at the back of the classroom hear me?
―No problem.
A. sit B. sitting C. seat D. seating
【回答】
.B
解析：考查非谓语动词。本句句意：――那些坐在教室后面的人能听到我讲话吗?――没问题（能听到）。第一句的主干部分是Can those…hear me?所缺的成分在句子中作后置定语,补全后可变为:Can those who are sitting/seated at the back of the calssroom hear me ? 即可理解为sitting at the back of the calssroom作后置定语修饰其前面的those，如果选D项则须改为seated.
知识点：分词
题型：选择题
