-Jack I think you should say sorry to MaryI won’t do that she says sorry to me first.

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。

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