问题
选择题
______ in the school campus in spring, we will always noitce a colorful display of flowers.
A．Walk
B．Having walked
C．Being walking
D．Walking
答案
答案：D
非谓语动词作时间状语。Walk和句子主语we是主谓关系，且和noitce这一动作同时发生，应选Walking。