I was just to go out when the telephone rang A. /B. aboutC. likelyD. off

问题补充：

I was just to go out when the telephone rang ．

A. /

B. about

C. likely

D. off

答案：

A. /

(答案→)B. about

C. likely

D. off

解析：考查固定句型。Be about to do sth when…正要做某事在这时…(发生意料之外的事)；