Jimmy didn’t notice his head teacher entering his bed room. He a phone call.
A. answered
B. has answered
C. was answering
D. is answering
网友回答
A. answered
B. has answered
(答案→)C. was answering
D. is answering
解析：本题考查时态的用法。根据上文的语境可知，Jimmy打电话是他的班主任进来的那个时刻，所以该空应该用过去进行时。）