问题

He does so little work in the office that for all practical purposes it would make no difference _______ he didn’t come
A:if
B:when
C:why
D:whether
B:when
C:why
D:whether
正确答案是:
同类题型
It is _______ of the students to stay up readingtill late night before the final exam
Where did you get to know her –It was on the farm __________ we worked.
We haven’t enough books for everyone; someof you will have to _____
Helen was not good at her work last term, but now she works ________.
_________ his telephone number —I have his number, but I _________ tobring my phone book”