单选题：He rolled up his trousers leg to exhibit his wounded knee.

题目内容：

He rolled up his trousers leg to exhibit his wounded knee. A．spread
B．open
C．show
D．examine

参考答案：

答案解析：

There are various ways to solve the problem.

There are various ways to solve the problem.A．same B．many C．helpful D．different

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