--Where is Grace?--She in the yard.A. readsB. readC. is readingD. was reading

问题补充：

--Where is Grace?--She in the yard.

A. reads

B. read

C. is reading

D. was reading

答案：

A. reads

B. read

(答案→)C. is reading

D. was reading

解析： 问某人现在在做什么，那么在做的事情应该是正在做，故本题用现在进行时，结构为is reading，故本题选C。