问题
选择题
Judging from his face_______ there was a confident smile, we knew that he didn’t lose heart.
A．in which
B．from which
C．by which
D．on which
答案
D
题目分析：句意：从他带着自信的笑容的脸上，我们知道他没有灰心。这里使用了定语从句，先行词是his face，定语从句中缺少的是on the face，所以用on which引导定语从句，选D。