AtfirstMr.Johnwas

问题详情：

 At first Mr. John was ___ of planes, but two years later, ___ to other countries on business is his main business.

       A. scared; flying                          B. Frightening; flight

       C. frightened; flight                     D. scaring; flying

【回答】

A

知识点：非谓语动词

题型：选择题