Question

1.( 2015 广东珠海一模，30 ) —Has Kevin finished his homework yet?

—I'm afraid not. He       on it at lunchtime.

   A. has worked   B. is working

   C. was working    D.had worked

Answer 1

1. C

1. C  句意:一凯文完成他的作业了吗？——恐怕没有。他午餐时间一直在做。表示在过去的一段时间(at lunchtime) 正在发生的事， 所以用过去进行时，由“ was/were+动词的现在词”构成，故选C.