Question

― Can those ____ at the back of the classroom hear me?

―No problem.

A. sit           B. sitting               C. seat                 D. seating

Answer 1

.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.