Tom ____ have kept his word. I wonder why he changed his mind.

       A. must                        B. should        C. need                 D would

— I wonder why he has been acting so strange these days.?

   —Recent pressure at work may_____ his behavior. ?

   A.account for                 B.make for?

   C.change for                   D.stand for?

—I wonder why he has been acting so strangely these days.

—Recent pressure at work may     his behavior.

A. make for         B. stand for       C. change for        D. account for

I wonder why he didn’t do it as ______.

   A. told him      B. he told      C. telling to     D. told to