日日人人_亚洲美女在线视频_av手机在线播放_国产大片aaa_欧美中文日韩_午夜理伦三级

The reason for his success is ______ he worked very hard.

     A. why        B. that               C. whether           D. how

 The reason for his success is ______ he worked very hard.

   A. why           B. that        C. whether           D. how

The reason for his success is _______ he worked very hard.

   A. why         B. that           C. whether        D. how

The reason for his success is ______ he worked very hard.

     A. why            B. that          C. whether          D. how

The reason for his success is ______ he worked very hard.

A. why          B. that         C. whether      D. how

28. The reason for his success is ______ he worked very hard.

   A. why         B. that        C. whether          D. How

The reason for his success is ______ he worked very hard.

   A. why                B. that                C. whether            D. how

The reason for his success is ___________he worked very hard.

A. why             B. that           C. whether      D. because

 The reason for his success is ______ he worked very hard.

   A. why         B. that        C. whether          D. how