----Is your father still an engineer? ----______.
A.Yes,he was
B.He didn't use to
C.No,but he used to
D.No,but he used to be
正确答案是D
----Is your father still an engineer? ----______.
A.Yes,he was
B.He didn't use to
C.No,but he used to
D.No,but he used to be
正确答案是D