2019年mba考试英语模拟题——其他175

{01}_____ the students are present. Who are absent?
A.Not both
B.Not all
C.None of
D.Neither of
解析：not all…表示部分否定，对三者或三者以上的人或事物进行部分否定，用否定副词not和代词all搭配。
本题选B。
{02}We wrote a letter of thanks to________ had helped us.
A.who
B.whom
C.whoever
D.whomever
解析：
本题选C。