______ the look on his face, he wasn't satisfied with their performance.
A、
To judge by
B、
Judging by
C、
Judge by
D、
To be judged by
【正确答案】
B
【答案解析】
从他脸上的表情判断，他不满意他们的表现。分词judging from“从……判断”，常做插入语。
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