问题详情:
Visitors to the hills are greeted by signs them to look out.
A. warn B. to warn C. warning D. warned
【回答】
C
知识点:非谓语动词
题型:选择题
问题详情:
Visitors to the hills are greeted by signs them to look out.
A. warn B. to warn C. warning D. warned
【回答】
C
知识点:非谓语动词
题型:选择题