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The monument was built in honor of the explorer who was believed the river. [ ]

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The monument was built in honor of the explorer who was believed the river. [ ]

The monument was built in honor of the explorer who was believed ________ the river.

[]

A.to have discovered

B.to have been discovered

C.to discover

D.having been discovered

试题答案

答案:A

提示:

“发现那条河”早于从句谓语动作,应该用不定式的完成形式。