题目内容：

说明理由
1.Some one else defines who they are and _____ they stand for as public figures.
A.whether B.that C.what D.how
2.There are many spelling mistakes in this exercise book,so it is ______ but satisfactory.
A.anything B.nothing C.everything D.something
3.Although most dreams apparently happen unconsciously,dream activities ______ by outside influence.
A.may be provided B.must be provided C.should be provided D.will be provided

优质解答

1.Some one else defines who they are and ___WHAT--缺少具体的指代,就用what__ they stand for as public figures.
2.There are many spelling mistakes in this exercise book,so it is ___ANYTHING___ but satisfactory.
anything but == not 还有:nothing but == very - - -
3.Although most dreams apparently happen unconsciously,dream activities ___A___ by outside influence.
A.may be provided -----“表猜测”.如果用must,语气太强,用may语气婉转.