题目内容：

Maria told Tom _____ she had looked for Susan but ____ she could not find her.
a /.../
b that.../
c that...that
d /...that
为什么选C?

优质解答

"but"连接的两句句子都是told的从句,当一个动词后有多个宾语从句时,连词that不能省略.句子结构Maria told Tom【 that （she had looked for Susan ）but （that she could not find her）】.（）中的两句句子并列,并...