更多"The last half of the nineteenth cen"的相关试题:
[单项选择]The last half of the nineteenth century () the steady improvement in the means of travel.
A. has witnessed
B. was witnessed
C. witnessed
D. is witnessed
[单项选择]The last half of the nineteenth century ______ the steady improvement in the means of travel.
A. has witnessed
B. was witnessed
C. witnessed
D. is witnessed