问题
选择题
The twins were so much alike that we had great trouble ________ one from the other.[ ]
A．distinguishing
B．to distinguish
C．distinguish
D．distinguished
答案
答案：A
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The twins were so much alike that we had great trouble ________ one from the other.[ ]
A．distinguishing
B．to distinguish
C．distinguish
D．distinguished
答案：A