问题

Many people can’t learn lessons from the mistakes they’ve made_____they get hurt somehow.
A:whether
B:unless
C:if
D:as;
B:unless
C:if
D:as;
正确答案是:
同类题型
Judy, I guess you are only twenty-five years old, is that true — Oh, it’s a ______.
The weather in Yang Zhou is much colder than _____ in Hainan in winter.
I would have attended your birthday party last night but for the fact that itat that time