问题
选择题
_____in the ticket hall for almost an hour, I suddenly realized I had left my ID card home. [ ]
A. To wait
B. To have waited
C. Waiting
D. Having waited
答案
答案：D
搜题请搜索小程序“爱下问搜题”
_____in the ticket hall for almost an hour, I suddenly realized I had left my ID card home. [ ]
A. To wait
B. To have waited
C. Waiting
D. Having waited
答案：D