Question

The professor _______ to walk out of the office when one of his students came in. A．was abou..

The professor _______ to walk out of the office when one of his students came in. A．was about to B．was going to C．would D．was to

Answer 1

A

考察固定句式be about to，将要做某事。句意：当他的一位学生进来时，这位教授即将走出他的办公室。选项BCD缺少谓语动词，故选A。