A Frenchman who lost his arms and legs successfully swam across the Channel, a challenge he _____ fo

题目简介

A Frenchman who lost his arms and legs successfully swam across the Channel, a challenge he _____ fo

题目详情

A Frenchman who lost his arms and legs successfully swam across the Channel, a challenge he _____
for two years.

[     ]

A. has been preparing
B. had been preparing
C. has prepared
D. prepares
题型:单选题难度:中档来源:模拟题

答案

B

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