Helen books at the moment. A. readsB. readingC. is readingD. will read

问题补充：

Helen books at the moment.

A. reads

B. reading

C. is reading

D. will read

答案：

A. reads

B. reading

(答案→)C. is reading

D. will read

解析：句意：海伦此刻正在读书。根据时间状语at the moment“此刻，目前”可知此处用现在进行时，be doing sth.故选C。