标题: During the tourist season, there are many people wandering in this city to se... [打印本页] 作者: 李老师 时间: 2017-3-1 19:15 标题: During the tourist season, there are many people wandering in this city to se... During the tourist season, there are many people wandering in this city to see the old castles () in the sixteenth century.
A. to be built
B. being built
C. having been built
D. built
满分：2 分
3. The professor could hardly find sufficient grounds ()his arguments in favor of the new theory.
A. to be based on
B. to base on
C. which to base on
D. on which to base
满分：2 分
4. () the essay a second