问题
选择题
--- I called you last night, but nobody answered.
--- Oh, I usually__________off my cell phone by 8:00 pm.
A．switched
B．have switched
C．switch
D．had switched
答案
答案：C
搜题请搜索小程序“爱下问搜题”
--- I called you last night, but nobody answered.
--- Oh, I usually__________off my cell phone by 8:00 pm.
A．switched
B．have switched
C．switch
D．had switched
答案：C