成人英语三级考试

【单选题】By the end of next week, we ______ thirty kilometers.
A. have traveled
B. had traveled
C. had been traveling
D. shall have been traveling

网考网参考答案：D
网考网解析：
[分析] 将来完成进行时表示在将来某一时刻之前一直延续的动作。本题正确答案D。 查看试题解析出处>>