(单选题) 31: I wonder how many years ago____________.
A: did your father retire
B: your father retired
C: has your father retired
D: your father has retired
(责任编辑:admin) |
(单选题) 31: I wonder how many years ago____________.
A: did your father retire
B: your father retired
C: has your father retired
D: your father has retired
(责任编辑:admin) |