问题补充:
-Jack, I think you should say sorry to Mary.
- I won’t do that she says sorry to me first.
A. unless
B. if
C. and
D. because
答案:
(答案→)A. unless
B. if
C. and
D. because
解析:句意:——杰克,我认为你应该向玛丽说对不起。——除非她先给我说对不起,否则我不说。unless除非,if如果,and和,because因为。根据句意,可知选A。